Fabrication of highly functional thin film materials by controlling the interface

• Project Area: New Materials Science on Nanoscale Structures and Functions of Crystal Defect Cores
• Project/Area Number: 19H05791
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Hokkaido University
• Principal Investigator: 太田 裕道 北海道大学, 電子科学研究所, 教授 (80372530)
• Co-Investigator(Kenkyū-buntansha): 寺崎 一郎 名古屋大学, 理学研究科, 教授 (30227508) ; 齊藤 圭司 京都大学, 理学研究科, 教授 (90312983)
• Project Period (FY): 2019-06-28 – 2024-03-31
• Project Status: Completed (Fiscal Year 2023)
• Budget Amount: ¥129,610,000 (Direct Cost: ¥99,700,000、Indirect Cost: ¥29,910,000); Fiscal Year 2023: ¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000); Fiscal Year 2022: ¥30,810,000 (Direct Cost: ¥23,700,000、Indirect Cost: ¥7,110,000); Fiscal Year 2021: ¥23,530,000 (Direct Cost: ¥18,100,000、Indirect Cost: ¥5,430,000); Fiscal Year 2020: ¥19,760,000 (Direct Cost: ¥15,200,000、Indirect Cost: ¥4,560,000); Fiscal Year 2019: ¥38,870,000 (Direct Cost: ¥29,900,000、Indirect Cost: ¥8,970,000)
• Keywords: 界面制御 / 熱輸送特性 / 電子輸送特性

Outline of Research at the Start

物質の原子スケールにおける熱伝導や電子伝導を可視化することができれば、新しい材料やデバイス開発に繋がります。本研究では、目に見える大きさのものとは全く異なる熱輸送特性や電子輸送特性を示す原子スケールの特殊な界面を「機能コア」と位置づけ、超精密な薄膜・デバイス作製技術を駆使して機能コアを導入したモデル材料を作製し、相界面における熱輸送特性や電子輸送特性を調査し、巨大機能の発現とその制御を目指します。

Outline of Annual Research Achievements

原子スケールの特殊な相界面を機能コアと位置づけ、パルスレーザー堆積法に基づく超精密な薄膜・デバイス作製技術を駆使して機能コアを導入したモデル材料を作製し、相界面における熱輸送特性や電子輸送特性における巨大機能の発現とその制御を目指す。具体的には、薄膜成長とその熱・電子輸送特性の計測・解析（太田Gr.）、金属酸化物バルク単結晶の育成とその熱・電子輸送特性の計測・解析（寺崎Gr.）、界面熱抵抗の理論解析とモデル提案（齊藤Gr.）を行うことで機能コアをモデル化するとともに、原子スケールの相界面を可視化し、巨大機能の起源を理論的に解明する。
(1) 全固体熱トランジスタを実現 [Adv. Funct. Mater. 2023] 熱の伝わり方を電気スイッチで切り替える全固体電気化学熱トランジスタを実現した。液体を一切使用しない全固体電気化学熱トランジスタを開発するため、結晶構造を維持したまま酸素含有率が変えられるSrCoOx (2 < x < 3)薄膜と、酸化物イオン伝導性固体電解質であるYSZを組合せた。電気化学的酸化・還元を行った結果、オン時の高い熱伝導率~3.8 W/m Kとオフ時の低い熱伝導率~0.95 W/m K（オン/オフ熱伝導率比４）を繰り返し切替えることに成功した。このオン/オフ比は電解液やイオン液体などの「液体」を用いた熱トランジスタと比較してそん色ない値である。
(2) 実用的な熱電材料の単結晶化に成功 [ACS Appl. Electron. Mater. 2023] Ba1/3CoO2薄膜が空気中・600℃においても安定であり、数ある酸化物熱電材料の中で最も高い熱電変換性能指数ZT (~0.55、空気中・600℃)を示すことを発見した。Ba1/3CoO2の実用化に向けた課題の一つである単結晶化を実現するため、サファイア基板上に作製したBa1/3CoO2単結晶膜を基板から剥離し、その熱電特性を計測した。その結果、Ba1/3CoO2単結晶膜は剥離後においても剥離前と変わらず高い熱電性能を維持することが分かった。

Research Progress Status

令和5年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和5年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] 江蘇大学/北京交通大学(中国)
• [Int'l Joint Research] 釜山大学校(韓国)
• [Int'l Joint Research] 江蘇大学/北京交通大学(中国)
• [Int'l Joint Research] トロント大学(カナダ)
• [Int'l Joint Research] 釜山大学校(韓国)
• [Int'l Joint Research] MIT(米国)
• [Int'l Joint Research] 釜山大学校(韓国)
• [Int'l Joint Research] 中国科学技術大学(中国)
• [Int'l Joint Research] ヨーク大学(英国)
• [Int'l Joint Research] パンディット・ディーンダヤル・エナジー大学(インド)
• [Int'l Joint Research] フンボルト大学ベルリン校(ドイツ)
• [Int'l Joint Research] 釜山大学校(韓国)
• [Int'l Joint Research] 北京科技大(中国)
• [Int'l Joint Research] Aalto大学(フィンランド)
• [Int'l Joint Research] 台湾・国立交通大学(その他の国・地域)
• [Int'l Joint Research] 釜山大学校/成均館大学校(韓国)
• [Int'l Joint Research] フンボルト大学ベルリン校(ドイツ)
• [Int'l Joint Research] 中国科学院 金属研究所(中国)
• [Int'l Joint Research] 台湾・国立交通大学(その他の国・地域)
• [Journal Article] Impurity effect on magnetic and thermal properties of S = 3/2 spin gap system Ba3Ca(Ru1-xNbx)2O9 (2024)
  • Author(s): Y. Ochiai, I. Terasaki and Y. Yasui
  • Journal Title: AIP Advances Volume: 14 Issue: 2 Pages: 025211-025211
  • DOI: 10.1063/9.0000667
  • Peer Reviewed
• [Journal Article] 非補償半金属を用いた熱電材料 (2024)
  • Author(s): 中埜彰俊
  • Journal Title: 固体物理 Volume: 59
• [Journal Article] High-mobility rutile SnO₂ epitaxial films grown on (1−100) α-Al₂O₃ (2023)
  • Author(s): Binjie Chen, Jinghuang Lin, Bin Feng, Yuichi Ikuhara, Hiromichi Ohta
  • Journal Title: Journal of the Ceramic Society of Japan Volume: 131 Issue: 10 Pages: 640-644
  • DOI: 10.2109/jcersj2.23035
  • ISSN: 1348-6535, 1882-0743
  • Year and Date: 2023-10-01
  • Peer Reviewed / Open Access
• [Journal Article] Spark plasma sintering on the thermoelectric sulfide Ta₂PdS₆ (2023)
  • Author(s): Nakano Akitoshi、Suekuni Koichiro、Hattori Nanako、Terasaki Ichiro
  • Journal Title: Journal of the Ceramic Society of Japan Volume: 131 Issue: 10 Pages: 669-674
  • DOI: 10.2109/jcersj2.23038
  • ISSN: 1348-6535, 1882-0743
  • Year and Date: 2023-10-01
  • Peer Reviewed / Open Access
• [Journal Article] Ba1/3CoO2－高温・空気中で安定した性能を示す実用的な熱電変換材料－ (2023)
  • Author(s): 太田裕道
  • Journal Title: 機能材料 Volume: 43 Pages: 3-9
• [Journal Article] Ba1/3CoO2：空気中・600℃で性能指数ZT = 0.55を示す酸化物熱電材料 (2023)
  • Author(s): 太田裕道
  • Journal Title: 日本結晶成長学会誌 Volume: 50
• [Journal Article] Recent progress in thermoelectric layered cobalt oxide thin films (2023)
  • Author(s): Yuqiao Zhang, Hiromichi Ohta
  • Journal Title: NPG Asia Mater. Volume: 15 Issue: 1
  • DOI: 10.1038/s41427-023-00520-w
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Suppression of Strain Relaxation in VO2/TiO2 Multilayered Films (2023)
  • Author(s): Binjie Chen, Chuchu Yang, Bin Feng, Yuichi Ikuhara, Hiromichi Ohta
  • Journal Title: ACS Applied Electronic Materials Volume: 5 Issue: 4 Pages: 2433-2438
  • DOI: 10.1021/acsaelm.3c00246
  • Peer Reviewed
• [Journal Article] Synthesis and transparent conductivity of crack-free La:BaSnO3 epitaxial flexible sheet (2023)
  • Author(s): Lizhikun Gong, Rui Yu, Hiromichi Ohta, Tsukasa Katayama
  • Journal Title: Dalton Trans Volume: 52 Issue: 19 Pages: 6317-6323
  • DOI: 10.1039/d3dt01097j
  • Peer Reviewed
• [Journal Article] Solid-State Electrochemical Thermal Transistors with Strontium Cobaltite - Strontium Ferrite Solid Solutions as the Active Layers (2023)
  • Author(s): Zhiping Bian, Qian Yang, Mitsuki Yoshimura, Hai Jun Cho, Joonhyuk Lee, Hyoungjeen Jeen, Takashi Endo, Yasutaka Matsuo, Hiromichi Ohta
  • Journal Title: ACS Appl. Mater. Interfaces Volume: 15 Issue: 19 Pages: 23512-23517
  • DOI: 10.1021/acsami.3c03660
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Significant Reduction in the Switching Time of Solid-State Electrochemical Thermal Transistors (2023)
  • Author(s): Mitsuki Yoshimura, Qian Yang, Zhiping Bian, Hiromichi Ohta
  • Journal Title: ACS Appl. Electron. Mater. Volume: 5 Issue: 8 Pages: 4233-4239
  • DOI: 10.1021/acsaelm.3c00512
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Ferroelectricity, high permittivity, and tunability in millimeter-size crack-free Ba1-xSrxTiO3 flexible epitaxial sheets (2023)
  • Author(s): Rui Yu, Lizhikun Gong, Hiromichi Ohta, Tsukasa Katayama
  • Journal Title: ACS Appl. Electron. Mater. Volume: 5 Issue: 9 Pages: 5234-5239
  • DOI: 10.1021/acsaelm.3c00963
  • Peer Reviewed
• [Journal Article] Fabrication and Thermoelectric Properties of Freestanding Ba1/3CoO2 Single Crystalline Films (2023)
  • Author(s): Kungwan Kang, Fumiaki Kato, Akitoshi Nakano, Ichiro Terasaki, Takashi Endo, Yasutaka Matsuo, Hyoungjeen Jeen, Hiromichi Ohta
  • Journal Title: ACS Appl. Electron. Mater. Volume: 5 Issue: 10 Pages: 5749-5754
  • DOI: 10.1021/acsaelm.3c01129
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Thermodynamic geometry of ideal quantum gases: a general framework and a geometric picture of BEC-enhanced heat engines (2023)
  • Author(s): Joshua Eglinton, Tuomas Pyhranta, Keiji Saito, Kay Brandner
  • Journal Title: New Journal of Physics Volume: 25 Issue: 4 Pages: 043014-043014
  • DOI: 10.1088/1367-2630/acc966
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Universal bounds on the performance of information-thermodynamic engine (2023)
  • Author(s): Tanogami Tomohiro、Van Vu Tan、Saito Keiji
  • Journal Title: Physical Review Research Volume: 5 Issue: 4 Pages: 043280-043280
  • DOI: 10.1103/physrevresearch.5.043280
  • Peer Reviewed / Open Access
• [Journal Article] Thermal conductivity and thermoelectric power of semiconductors (2023)
  • Author(s): I. Terasaki
  • Journal Title: Comprehensive Semiconductor Science and Technology" 2nd Edition/Elsevier Volume: - Pages: 203-241
  • DOI: 10.1016/b978-0-323-96027-4.00008-5
  • ISBN: 9780323958196
• [Journal Article] Contamination of rare earth oxide surfaces stored in vacuum environment (2023)
  • Author(s): Jason Tam, Peter M. Brodersen, Hiromichi Ohta, Uwe Erb
  • Journal Title: Colloids and Surfaces A: Physicochemical and Engineering Aspects Volume: 659 Pages: 130829-130829
  • DOI: 10.1016/j.colsurfa.2022.130829
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Efficient electrocatalytic H2O2 evolution utilizing electron-conducting molecular wires spatially separated by rotaxane encapsulation (2023)
  • Author(s): Chou Sheng-Ying、Masai Hiroshi、Otani Masaya、Miyagishi Hiromichi V.、Sakamoto Gentaro、Yamada Yusuke、Kinoshita Yusuke、Tamiaki Hitoshi、Katase Takayoshi、Ohta Hiromichi、Kondo Tomoki、Nakada Akinobu、Abe Ryu、Tanaka Takahisa、Uchida Ken、Terao Jun
  • Journal Title: Applied Catalysis B: Environmental Volume: 327 Pages: 122373-122373
  • DOI: 10.1016/j.apcatb.2023.122373
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Improved Electron Transport Properties of Zn-Rich In?Ga?Zn?O Thin-Film Transistors (2023)
  • Author(s): Ghediya Prashant、Yang Hui、Fujimoto Takashi、Zhang Yuqiao、Matsuo Yasutaka、Magari Yusaku、Ohta Hiromichi
  • Journal Title: The Journal of Physical Chemistry C Volume: 127 Issue: 5 Pages: 2622-2627
  • DOI: 10.1021/acs.jpcc.2c07442
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Solid‐State Electrochemical Thermal Transistors (2023)
  • Author(s): Yang Qian、Cho Hai Jun、Bian Zhiping、Yoshimura Mitsuki、Lee Joonhyuk、Jeen Hyoungjeen、Lin Jinghuang、Wei Jiake、Feng Bin、Ikuhara Yuichi、Ohta Hiromichi
  • Journal Title: Advanced Functional Materials Volume: - Issue: 19 Pages: 2214939-2214939
  • DOI: 10.1002/adfm.202214939
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Topological Speed Limit (2023)
  • Author(s): Tan Van Vu and Keiji Saito
  • Journal Title: Phys. Rev. Lett. Volume: 130 Issue: 1
  • DOI: 10.1103/physrevlett.130.010402
  • Peer Reviewed
• [Journal Article] Direct Imaging of Ion Migration in Amorphous Oxide Electronic Synapses with Intrinsic Analog Switching Characteristics (2023)
  • Author(s): Tsurumaki-Fukuchi Atsushi、Katase Takayoshi、Ohta Hiromichi、Arita Masashi、Takahashi Yasuo
  • Journal Title: ACS Applied Materials &amp; Interfaces Volume: 15 Issue: 13 Pages: 16842-16852
  • DOI: 10.1021/acsami.2c21568
  • Peer Reviewed / Open Access
• [Journal Article] Ceramic science of crystal defect cores (2022)
  • Author(s): Matsunaga Katsuyuki、Yoshiya Masato、Shibata Naoya、Ohta Hiromichi、Mizoguchi Teruyasu
  • Journal Title: Journal of the Ceramic Society of Japan Volume: 130 Issue: 8 Pages: 648-667
  • DOI: 10.2109/jcersj2.22080
  • ISSN: 1348-6535, 1882-0743
  • Year and Date: 2022-08-01
  • Peer Reviewed / Open Access
• [Journal Article] Thin film growth and thermoelectric properties of electron conducting oxides (2022)
  • Author(s): Hiromichi Ohta
  • Journal Title: Journal of the Ceramic Society of Japan Volume: 130 Issue: 7 Pages: 471-476
  • DOI: 10.2109/jcersj2.22061
  • ISSN: 1348-6535, 1882-0743
  • Year and Date: 2022-07-01
  • Peer Reviewed
• [Journal Article] 1D Atomic Defect Tunnel Structure of Oxygen-Deficient Tungsten Oxide Epitaxial Films and Its Redox Device Applications (2022)
  • Author(s): Gowoon Kim, Hiromichi Ohta
  • Journal Title: Phys. Status Solidi A Volume: 219 Issue: 21
  • DOI: 10.1002/pssa.202200058
  • Peer Reviewed
• [Journal Article] 機能コアを活用した新機能薄膜の創成 (2022)
  • Author(s): 太田裕道, 寺崎一郎, 齊藤圭司
  • Journal Title: まてりあ Volume: 61 Pages: 661-665
• [Journal Article] 高温・空気中で安定した性能を示す実用的な熱電変換材料を発見 (2022)
  • Author(s): 太田裕道
  • Journal Title: クリーンエネルギー Volume: 31 Pages: 41-45
• [Journal Article] Modulation of Electrical and Thermal Transports through Lattice Distortion in BaTi1?xNbxO3 Solid Solutions (2022)
  • Author(s): Yuqiao Zhang, Hai Jun Cho, Feng Jiang, Chengliang Xia, Yue Chen, Weishu Liu, Hiromichi Ohta
  • Journal Title: Nanotechnology Volume: 33 Issue: 40 Pages: 405702-405702
  • DOI: 10.1088/1361-6528/ac78f3
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Ba1/3CoO2: A Thermoelectric Oxide Showing a Reliable ZT of ~0.55 at 600 °C in Air (2022)
  • Author(s): Xi Zhang, Yuqiao Zhang, Liao Wu, Akihiro Tsuruta, Masashi Mikami, Hai Jun Cho, Hiromichi Ohta
  • Journal Title: ACS Appl. Mater. Interfaces Volume: 14 Issue: 29 Pages: 33355-33360
  • DOI: 10.1021/acsami.2c08555
  • Peer Reviewed
• [Journal Article] Ferroelectric and Magnetic Properties of Hexagonal ErFeO₃Epitaxial Films (2022)
  • Author(s): Chen Binjie、Ohta Hiromichi、Katayama Tsukasa
  • Journal Title: ACS Applied Electronic Materials Volume: 4 Issue: 9 Pages: 4547-4552
  • DOI: 10.1021/acsaelm.2c00767
  • Peer Reviewed
• [Journal Article] Thermopower Modulation Analyses of High-Mobility Transparent Amorphous Oxide Semiconductor Thin-Film Transistors (2022)
  • Author(s): Yang Hui、Zhang Yuqiao、Matsuo Yasutaka、Magari Yusaku、Ohta Hiromichi
  • Journal Title: ACS Applied Electronic Materials Volume: 4 Issue: 10 Pages: 5081-5086
  • DOI: 10.1021/acsaelm.2c01210
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Orthorhombic distortion-induced anatase-like optoelectronic properties of rutile TiO2 (2022)
  • Author(s): Chen Binjie、Kang Kungwan、Jeen Hyoungjeen、Zhang Yuqiao、Lin Jinghuang、Feng Bin、Ikuhara Yuichi、Hoshino Sena、Matsunaga Katsuyuki、Ohta Hiromichi
  • Journal Title: Journal of Applied Physics Volume: 132 Issue: 18 Pages: 185301-185301
  • DOI: 10.1063/5.0119725
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Significant Suppression of Cracks in Freestanding Perovskite Oxide Flexible Sheets Using a Capping Oxide Layer (2022)
  • Author(s): Gong Lizhikun、Wei Mian、Yu Rui、Ohta Hiromichi、Katayama Tsukasa
  • Journal Title: ACS Nano Volume: 16 Issue: 12 Pages: 21013-21019
  • DOI: 10.1021/acsnano.2c08649
  • Peer Reviewed
• [Journal Article] Thermodynamics of Precision in Markovian Open Quantum Dynamics (2022)
  • Author(s): Tan Van Vu and Keiji Saito
  • Journal Title: Phys. Rev. Lett. Volume: 128 Issue: 14
  • DOI: 10.1103/physrevlett.128.140602
  • Peer Reviewed
• [Journal Article] Exponential Clustering of Bipartite Quantum Entanglement at Arbitrary Temperatures (2022)
  • Author(s): Kuwahara Tomotaka、Saito Keiji
  • Journal Title: Physical Review X Volume: 12 Issue: 2 Pages: 021022-021022
  • DOI: 10.1103/physrevx.12.021022
  • Peer Reviewed / Open Access
• [Journal Article] Correlation between thermopower and carrier mobility in the thermoelectric semimetal Ta2PdSe6 (2022)
  • Author(s): Nakano Akitoshi、Maruoka Urara、Terasaki Ichiro
  • Journal Title: Applied Physics Letters Volume: 121 Issue: 15 Pages: 153903-153903
  • DOI: 10.1063/5.0102434
  • Peer Reviewed
• [Journal Article] 遷移金属硫化物Ta2PdS6の熱電物性 (2022)
  • Author(s): 中埜彰俊
  • Journal Title: 日本熱電学会誌 Volume: 19 Pages: 10-11
• [Journal Article] Room Temperature Insulator-to-Metal Transition of VO2/TiO2 Epitaxial Bilayer Films Grown on M-plane Sapphire Substrates (2022)
  • Author(s): Binjie Chen, Gowoon Kim, Hai Jun Cho, and Hiromichi Ohta
  • Journal Title: Advanced Electronic Materials Volume: 8 Issue: 1 Pages: 2100687-2100687
  • DOI: 10.1002/aelm.202100687
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Specular Acoustic Vibrational Wave Transmissions with the Presence of Phononic Bandgaps (2022)
  • Author(s): Cho Hai Jun、Wu Yuzhang、Qi Jiajun、Kim Yuna、Ohta Hiromichi、Matsuda Osamu
  • Journal Title: Journal of the Physical Society of Japan Volume: 91 Issue: 1 Pages: 014601-014601
  • DOI: 10.7566/jpsj.91.014601
  • Peer Reviewed
• [Journal Article] Optoelectronic properties of transparent oxide semiconductor ASnO3 (A = Ba, Sr, and Ca) epitaxial films and thin film transistors (2022)
  • Author(s): Anup V. Sanchela, Mian Wei, Hai Jun Cho, Hiromichi Ohta
  • Journal Title: J. Vac. Sci. Technol. A Volume: 40 Issue: 2
  • DOI: 10.1116/6.0001474
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] High-Pressure Thermopower of the Mott Insulator Ca2RuO4 (2022)
  • Author(s): Isuzu Sano, Tomohito Nakano, Akitoshi Nakano, Hiroki Taniguchi, Fumihiko Nakamura, Ichiro Terasaki
  • Journal Title: Journal of the Physical Society of Japan Volume: 91 Issue: 3
  • DOI: 10.7566/jpsj.91.033703
  • Peer Reviewed
• [Journal Article] Fate of Measurement-Induced Phase Transition in Long-Range Interactions (2022)
  • Author(s): Minato Takaaki、Sugimoto Koudai、Kuwahara Tomotaka、Saito Keiji
  • Journal Title: Physical Review Letters Volume: 128 Issue: 1 Pages: 010603-010603
  • DOI: 10.1103/physrevlett.128.010603
  • Peer Reviewed
• [Journal Article] Thermal Diffusivity of the Mott Insulator Ca2RuO4 in a Non-equilibrium Steady State (2021)
  • Author(s): Shuji Kawasaki, Akitoshi Nakano, Hiroki Taniguchi, Hai Jun Cho,Hiromichi Ohta, Fumihiko Nakamura, and Ichiro Terasaki
  • Journal Title: Journal of the Physical Society of Japan Volume: 90 Issue: 6 Pages: 063601-063601
  • DOI: 10.7566/jpsj.90.063601
  • NAID: 120007175357
  • Peer Reviewed
• [Journal Article] Pressure-tunable thermal conductivity observed for bisamide functionalized diacetylene crystals (2021)
  • Author(s): Qi Jiajun、Wu Yuzhang、Cho Hai Jun、Kim Yuna、Ohta Hiromichi、Tamaoki Nobuyuki
  • Journal Title: Journal of Materials Science Volume: 56 Issue: 27 Pages: 15481-15490
  • DOI: 10.1007/s10853-021-06192-7
  • Peer Reviewed
• [Journal Article] Solid-State Electrochemical Redox Control of the Optoelectronic Properties for SrFeOx Thin Films (2021)
  • Author(s): Qian Yang*, Hai Jun Cho, Hyoungjeen Jeen, and Hiromichi Ohta*
  • Journal Title: J. Appl. Phys. Volume: 129 Issue: 21 Pages: 215303-215303
  • DOI: 10.1063/5.0053939
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Single-dislocation Schottky diodes (2021)
  • Author(s): Ang Tao, Tingting Yao, Yixiao Jiang, Lixin Yang, Chunlin Chen, Xuexi Yan, Hiromichi Ohta, Yuichi Ikuhara, Hengqiang Ye, Xiu-Liang Ma
  • Journal Title: Nano Lett. Volume: 21 Issue: 13 Pages: 5586-5592
  • DOI: 10.1021/acs.nanolett.1c01081
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Solid-State Electrochemical Protonation of SrCoO2.5 into HxSrCoO2.5 (x = 1, 1.5 and 2) (2021)
  • Author(s): Qian Yang*, Joonhyuk Lee, Hyoungjeen Jeen, Hai Jun Cho, and Hiromichi Ohta*
  • Journal Title: ACS Appl. Electron. Mater. Volume: 3 Issue: 7 Pages: 3296-3300
  • DOI: 10.1021/acsaelm.1c00505
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Atomistic Origin of Li-Ion Conductivity Reduction at Li3xLa2/3-xTiO3 Grain Boundary (2021)
  • Author(s): Sasano Shun、Ishikawa Ryo、Sanchez-Santolino Gabriel、Ohta Hiromichi、Shibata Naoya、Ikuhara Yuichi
  • Journal Title: Nano Letters Volume: 21 Issue: 14 Pages: 6282-6288
  • DOI: 10.1021/acs.nanolett.1c02174
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Reversible Redox Control of Optoelectronic Properties of Hexagonal Tungsten Oxide Epitaxial Film Grown on YSZ Solid Electrolyte (2021)
  • Author(s): Gowoon Kim, Hai Jun Cho, and Hiromichi Ohta
  • Journal Title: ACS Applied Electron Materials Volume: 3 Issue: 8 Pages: 3619-3625
  • DOI: 10.1021/acsaelm.1c00522
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Unveiling the Electronic Structure of Grain Boundaries in Anatase with Electron Microscopy and First-Principles Modeling (2021)
  • Author(s): Quirk James A.、Miao Bin、Feng Bin、Kim Gowoon、Ohta Hiromichi、Ikuhara Yuichi、McKenna Keith P.
  • Journal Title: Nano Letters Volume: 21 Issue: 21 Pages: 9217-9223
  • DOI: 10.1021/acs.nanolett.1c03099
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Microstructure and electronic properties of La2Ti2O7 thin films on SrTiO3 substrates (2021)
  • Author(s): Beibei Qiao, Yixiao Jianga, Tingting Yaoa, Ang Tao, Xuexi Yan, Chunyang Gao, Xiang Li, Hiromichi Ohta, Chunlin Chen, Xiu-Liang Ma, Hengqiang Ye
  • Journal Title: Appl. Surf. Sci. Volume: 587 Pages: 151599-151599
  • DOI: 10.1016/j.apsusc.2021.151599
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Structure and thermoelectric properties of electrochemically doped polythiophene thin films: Effect of side chain density (2021)
  • Author(s): Ito Shun-ichiro、Kanahashi Kaito、Ohta Hiromichi、Ito Hiroshi、Takenobu Taishi、Tanaka Hisaaki
  • Journal Title: Applied Physics Letters Volume: 119 Issue: 18 Pages: 183304-183304
  • DOI: 10.1063/5.0067769
  • Peer Reviewed
• [Journal Article] Solid-State Electrochemical Switch of Superconductor-Metal-Insulators (2021)
  • Author(s): Zhang Xi、Kim Gowoon、Yang Qian、Wei Jiake、Feng Bin、Ikuhara Yuichi、Ohta Hiromichi
  • Journal Title: ACS Applied Materials & Interfaces Volume: 13 Issue: 45 Pages: 54204-54209
  • DOI: 10.1021/acsami.1c17014
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Effect of annealing on grain growth and Y segregation behavior in tetragonal ZrO2 thin film (2021)
  • Author(s): Nakade Hiroaki、Tochigi Eita、Feng Bin、Ishikawa Ryo、Ohta Hiromichi、Shibata Naoya、Ikuhara Yuichi
  • Journal Title: Journal of the American Ceramic Society Volume: 105 Issue: 3 Pages: 2300-2308
  • DOI: 10.1111/jace.18217
  • Peer Reviewed
• [Journal Article] 安心・安全な熱電変換材料を目指して－優れた変換性能をもつ層状酸化物Ba1/3CoO2 (2021)
  • Author(s): 太田裕道
  • Journal Title: 化学 Volume: 76 Pages: 68-69
• [Journal Article] Giant Peltier conductivity in an uncompensated semimetal Ta₂PdSe₆ (2021)
  • Author(s): Nakano Akitoshi、Yamakage Ai、Maruoka Urara、Taniguchi Hiroki、Yasui Yukio、Terasaki Ichiro
  • Journal Title: Journal of Physics: Energy Volume: 3 Issue: 4 Pages: 044004-044004
  • DOI: 10.1088/2515-7655/ac2357
  • Peer Reviewed / Open Access
• [Journal Article] Unconventional high-temperature ferromagnetic semiconductor PbPd_{1?<i>x</i>?<i>y</i>}Fe_<i>y</i>Li_<i>x</i>O₂ (2021)
  • Author(s): He Yangchen、Sato Daiki、Misawa Kazuki、Nishihara Daiki、Kimura Akinori、Nakano Akitoshi、Taniguchi Hiroki、Terasaki Ichiro
  • Journal Title: Journal of Applied Physics Volume: 129 Issue: 20 Pages: 203903-203903
  • DOI: 10.1063/5.0051283
  • NAID: 120007192037
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Microscopic Theory of Fluctuating Hydrodynamics in Nonlinear Lattices (2021)
  • Author(s): Saito Keiji、Hongo Masaru、Dhar Abhishek、Sasa Shin-ichi
  • Journal Title: Physical Review Letters Volume: 127 Issue: 1 Pages: 010601-010601
  • DOI: 10.1103/physrevlett.127.010601
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Fabrication and characterization of tetragonal yttria-stabilized zirconia single-crystalline thin film (2021)
  • Author(s): H. Nakade, E. Tochigi, B. Feng, Y. Nezu, H. Ohta, N. Shibata, and Y. Ikuhara
  • Journal Title: Journal of the American Ceramic Society Volume: 104 Issue: 3 Pages: 1198-203
  • DOI: 10.1111/jace.17534
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Layered cobalt oxide epitaxial films exhibiting thermoelectric ZT = 0.11 at room temperature (2021)
  • Author(s): Takashima Yugo、Zhang Yu-qiao、Wei Jiake、Feng Bin、Ikuhara Yuichi、Cho Hai Jun、Ohta Hiromichi
  • Journal Title: Journal of Materials Chemistry A Volume: 9 Issue: 1 Pages: 274-280
  • DOI: 10.1039/d0ta07565e
  • Peer Reviewed
• [Journal Article] Anisotropic Electrical Conductivity of Oxygen-Deficient Tungsten Oxide Films with Epitaxially Stabilized 1D Atomic Defect Tunnels (2021)
  • Author(s): Kim Gowoon、Feng Bin、Ryu Sangkyun、Cho Hai Jun、Jeen Hyoungjeen、Ikuhara Yuichi、Ohta Hiromichi
  • Journal Title: ACS Applied Materials & Interfaces Volume: 13 Issue: 5 Pages: 6864-6869
  • DOI: 10.1021/acsami.0c21240
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Anomalously Low Heat Conduction in Single‐Crystal Superlattice Ceramics Lower Than Randomly Oriented Polycrystals (2021)
  • Author(s): Cho Hai Jun、Wu Yuzhang、Zhang Yu‐Qiao、Feng Bin、Mikami Masashi、Shin Woosuck、Ikuhara Yuichi、Sheu Yu‐Miin、Saito Keiji、Ohta Hiromichi
  • Journal Title: Advanced Materials Interfaces Volume: 8 Issue: 7 Pages: 2001932-2001932
  • DOI: 10.1002/admi.202001932
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Low thermal conductivity of SrTiO3-LaTiO3 and SrTiO3-SrNbO3 thermoelectric oxide solid solutions (2021)
  • Author(s): Yuqiao Zhang*, Hai Jun Cho, Kenyu Sugo, Masashi Mikami, Sungmin Woo, Myung-Chul Jung, Yao-Hua Zhuang, Bin Feng, Yu-Miin Sheu*, Woosuck Shin, Woo Seok Choi, Myung Joon Han, Yuichi Ikuhara, and Hiromichi Ohta*
  • Journal Title: Journal of the American Ceramic Society Volume: - Issue: 8 Pages: 4075-4085
  • DOI: 10.1111/jace.17797
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Room Temperature Thermoelectric Properties of Isostructural Selenides Ta2PdS6 and Ta2PdSe6 (2021)
  • Author(s): Nakano Akitoshi、Maruoka Urara、Kato Fumiaki、Taniguchi Hiroki、Terasaki Ichiro
  • Journal Title: Journal of the Physical Society of Japan Volume: 90 Issue: 3 Pages: 033702-033702
  • DOI: 10.7566/jpsj.90.033702
  • NAID: 210000158830
  • Peer Reviewed
• [Journal Article] Delta-T noise in the Kondo regime (2021)
  • Author(s): Hasegawa Masahiro、Saito Keiji
  • Journal Title: Physical Review B Volume: 103 Issue: 4 Pages: 045409-045409
  • DOI: 10.1103/physrevb.103.045409
  • Peer Reviewed
• [Journal Article] Electric field thermopower modulation analyses of the operation mechanism of transparent amorphous SnO2 thin-film transistor (2020)
  • Author(s): Dou-dou Liang*, Yu-qiao Zhang, Hai Jun Cho and Hiromichi Ohta*
  • Journal Title: Applied Physics Letters Volume: 116 Issue: 14 Pages: 143503-143503
  • DOI: 10.1063/5.0003153
  • NAID: 120007007922
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Oligothiophene‐Based Phosphonates for Surface Modification of Ultraflat Transparent Conductive Oxides (2020)
  • Author(s): M. Timpel, M. V. Nardi, B. Wegner, G. Ligorio, L. Pasquali, M. Patzel, S. Hecht, H. Ohta, and N. Koch
  • Journal Title: Advanced Materials Interfaces Volume: 7 Issue: 12 Pages: 1902114-1902114
  • DOI: 10.1002/admi.201902114
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Fabrication and Operating Mechanism of Deep‐UV Transparent Semiconducting SrSnO3‐Based Thin Film Transistor (2020)
  • Author(s): Mian Wei, Lizhikun Gong, Dou-dou Liang, Hai Jun Cho*, and Hiromichi Ohta*
  • Journal Title: Advanced Electronic Materials Volume: 6 Issue: 7 Pages: 2000100-2000100
  • DOI: 10.1002/aelm.202000100
  • NAID: 120007097392
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Insulator-to-Metal Transition of Cr2O3 Thin Films via Isovalent Ru3+ Substitution (2020)
  • Author(s): Fujiwara Kohei、Kitamura Miho、Shiga Daisuke、Niwa Yasuhiro、Horiba Koji、Nojima Tsutomu、Ohta Hiromichi、Kumigashira Hiroshi、Tsukazaki Atsushi
  • Journal Title: Chemistry of Materials Volume: 32 Issue: 12 Pages: 5272-5279
  • DOI: 10.1021/acs.chemmater.0c01497
  • Peer Reviewed
• [Journal Article] Unusually Large Thermopower Change from +330 to -185 μV K-1 of Brownmillerite SrCoO2.5 (2020)
  • Author(s): Yang Qian、Lee Joonhyuk、Feng Bin、Ikuhara Yuichi、Kim Gowoon、Cho Hai Jun、Jeen Hyoungjeen、Ohta Hiromichi
  • Journal Title: ACS Applied Electronic Materials Volume: 2 Issue: 7 Pages: 2250-2256
  • DOI: 10.1021/acsaelm.0c00427
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Coexistence of High Electron Conduction and Low Heat Conduction in Tungsten Oxide Epitaxial Films with 1D Atomic Defect Tunnels (2020)
  • Author(s): Kim Gowoon、Feng Bin、Sheu Yu-Miin、Cho Hai Jun、Ikuhara Yuichi、Ohta Hiromichi
  • Journal Title: ACS Applied Electronic Materials Volume: 2 Issue: 8 Pages: 2507-2513
  • DOI: 10.1021/acsaelm.0c00428
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Spontaneous Generation of Carrier Electrons at the Interface between Polycrystalline ZnO and Amorphous InGaZnO4 (2020)
  • Author(s): Fabian Krahl, Yuzhang Wu, Hai Jun Cho*, Maarit Karppinen, and Hiromichi Ohta*
  • Journal Title: Advanced Electronic Materials Volume: 6 Issue: 10 Pages: 2000404-2000404
  • DOI: 10.1002/aelm.202000404
  • NAID: 120007160291
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Non-equilibrium Steady State in the Mott Insulator Ca2RuO4 (2020)
  • Author(s): Ichiro Terasaki, Isuzu Sano, Kosuke Toda, Shuji Kawasaki, Akitoshi Nakano, Hiroki Taniguchi, Hai Jun Cho, Hiromichi Ohta, and Fumihiko Nakamura
  • Journal Title: Journal of the Physical Society of Japan Volume: 89 Issue: 9 Pages: 93707-93707
  • DOI: 10.7566/jpsj.89.093707
  • NAID: 120006941020
  • Peer Reviewed
• [Journal Article] Thickness Optimization toward High-Performance Bottom-Gated Transparent Tin Dioxide Thin-Film Transistors (2020)
  • Author(s): Dou-dou Liang*, Binjie Chen, Hai Jun Cho, and Hiromichi Ohta*
  • Journal Title: ACS Applied Electronic Materials Volume: 2 Issue: 10 Pages: 3454-3458
  • DOI: 10.1021/acsaelm.0c00711
  • NAID: 120007166175
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Charge and thermoelectric transport mechanism in donor-acceptor copolymer films (2020)
  • Author(s): Kanahashi Kaito、Noh Yong-Young、Park Won-Tae、Yang Hoichang、Ohta Hiromichi、Tanaka Hisaaki、Takenobu Taishi
  • Journal Title: Physical Review Research Volume: 2 Issue: 4 Pages: 43330-43330
  • DOI: 10.1103/physrevresearch.2.043330
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Tuning of the Optoelectronic Properties for Transparent Oxide Semiconductor ASnO3 by Modulating the Size of A-Ions (2020)
  • Author(s): Mian Wei*, Hai Jun Cho, and Hiromichi Ohta*
  • Journal Title: ACS Applied Electronic Materials Volume: 2 Issue: 12 Pages: 3971-3976
  • DOI: 10.1021/acsaelm.0c00806
  • NAID: 120007179821
  • Peer Reviewed
• [Journal Article] Optimization of Two-Dimensional Channel Thickness in Nanometer-Thick SnO2-Based Top-Gated Thin-Film Transistors Using Electric Field Thermopower Modulation: Implications for Flat-Panel Displays (2020)
  • Author(s): Liang Doudou、Chen Bin-jie、Feng Bin、Ikuhara Yuichi、Cho Hai Jun、Ohta Hiromichi
  • Journal Title: ACS Applied Nano Materials Volume: 3 Issue: 12 Pages: 12427-12432
  • DOI: 10.1021/acsanm.0c03069
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Strictly Linear Light Cones in Long-Range Interacting Systems of Arbitrary Dimensions (2020)
  • Author(s): Tomotaka Kuwahara, Keiji Saito
  • Journal Title: Physical Review X Volume: 10 Issue: 3 Pages: 031010-031010
  • DOI: 10.1103/physrevx.10.031010
  • Peer Reviewed / Open Access
• [Journal Article] Anisotropic Heat Conduction in Ion Substituted Layered Cobalt Oxides (2020)
  • Author(s): Hai Jun Cho*, Yugo Takashima, Yukio Nezu, Takaki Onazato, Hiromichi Ohta*
  • Journal Title: Adv. Mater. Interfaces Volume: 7 Issue: 3 Pages: 1901816-1901816
  • DOI: 10.1002/admi.201901816
  • NAID: 120006957261
  • Peer Reviewed
• [Journal Article] Phase Instability amid Dimensional Crossover in Artificial Oxide Crystal (2020)
  • Author(s): Seung Gyo Jeong, Taewon Min, Sungmin Woo, Jiwoong Kim, Yu-Qiao Zhang, Seong Won Cho, Jaeseok Son, Young-Min Kim, Jung Hoon Han, Sungkyun Park, Hu Young Jeong, Hiromichi Ohta, Suyoun Lee, Tae Won Noh, Jaekwang Lee*, Woo Seok Choi*
  • Journal Title: Phys. Rev. Lett. Volume: 124 Issue: 2 Pages: 026401-026401
  • DOI: 10.1103/physrevlett.124.026401
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] High electrical conducting deep-ultraviolet-transparent oxide semiconductor La-doped SrSnO3 exceeding ~3000 S cm-1 (2020)
  • Author(s): Wei Mian、Sanchela Anup V.、Feng Bin、Ikuhara Yuichi、Cho Hai Jun、Ohta Hiromichi
  • Journal Title: Applied Physics Letters Volume: 116 Issue: 2 Pages: 022103-022103
  • DOI: 10.1063/1.5128410
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] An oxide-based flexible electrochromic transistor under mechanical stress (2020)
  • Author(s): Takaki Onozato*, Hai Jun Cho, Hiromichi Ohta*
  • Journal Title: Jpn. J. Appl. Phys. Volume: 59 Issue: 2 Pages: 024002-024002
  • DOI: 10.7567/1347-4065/ab6563
  • NAID: 120006955179
  • Peer Reviewed
• [Journal Article] Arbitrary control of the diffusion potential between a plasmonic metal and a semiconductor by an angstrom-thick interface dipole layer (2020)
  • Author(s): Oshikiri Tomoya, Sawayanagi Hiroki, Nakamura Keisuke, Ueno Kosei, Katase Takayoshi, Ohta Hiromichi, Misawa Hiroaki
  • Journal Title: The Journal of Chemical Physics Volume: 152 Issue: 3 Pages: 034705-034705
  • DOI: 10.1063/1.5134900
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Effect of lattice distortions on the electron and thermal transport properties of transparent oxide semiconductor Ba1-xSrxSnO3 solid solution films (2020)
  • Author(s): Hai Jun Cho,* Koichi Sato, Mian Wei, Gowoon Kim, Hiromichi Ohta*
  • Journal Title: J. Appl. Phys. Volume: 127 Issue: 11
  • DOI: 10.1063/5.0002172
  • NAID: 120006995794
  • Peer Reviewed
• [Journal Article] Current-induced Giant Lattice Deformation in the Mott Insulator Ca2RuO4 (2020)
  • Author(s): Okazaki Ryuji、Kobayashi Kensuke、Kumai Reiji、Nakao Hironori、Murakami Youichi、Nakamura Fumihiko、Taniguchi Hiroki、Terasaki Ichiro
  • Journal Title: Journal of the Physical Society of Japan Volume: 89 Issue: 4 Pages: 044710-044710
  • DOI: 10.7566/jpsj.89.044710
  • NAID: 210000158121
  • Peer Reviewed
• [Journal Article] Examination of Nonlinear Conductivity on the Excitonic Insulator Candidate Ta2NiSe5 (2020)
  • Author(s): A.Nakano, U. Maruoka, H. Taniguchi, and I. Terasaki
  • Journal Title: J. Phys. Soc. Jpn. Volume: 89 Issue: 4 Pages: 045001-045001
  • DOI: 10.7566/jpsj.89.045001
  • NAID: 210000158094
  • Peer Reviewed
• [Journal Article] Thermodynamic Geometry of Microscopic Heat Engines (2020)
  • Author(s): Kay Brandner and Keiji Saito
  • Journal Title: Phys. Rev.Lett. Volume: 124 Issue: 4
  • DOI: 10.1103/physrevlett.124.040602
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Thermoelectric Phase Diagram of the SrTiO3-LaTiO3 Solid-Solution System through a Metal to Mott Insulator Transition (2019)
  • Author(s): Yuqiao Zhang*, Kenyu Sugo, Hai Jun Cho, Hiromichi Ohta*
  • Journal Title: J. Appl. Phys. Volume: 126 Issue: 7 Pages: 075104-075104
  • DOI: 10.1063/1.5100993
  • NAID: 120006878353
  • Peer Reviewed
• [Journal Article] Investigation of electrical and thermal transport property reductions in La-doped BaSnO3 films (2019)
  • Author(s): Cho Hai Jun、Feng Bin、Onozato Takaki、Wei Mian、Sanchela Anup V.、Ikuhara Yuichi、Ohta Hiromichi
  • Journal Title: Physical Review Materials Volume: 3 Issue: 9 Pages: 094601-094601
  • DOI: 10.1103/physrevmaterials.3.094601
  • Peer Reviewed
• [Journal Article] Macroscopic visualization of fast electrochemical reaction of SrCoOx oxygen sponge (2019)
  • Author(s): Qian Yang, Hai Jun Cho, Hyoungjeen Jeen*, Hiromichi Ohta*
  • Journal Title: Adv. Mater. Interfaces Volume: 6 Issue: 23
  • DOI: 10.1002/admi.201901260
  • NAID: 120006939398
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Giant power factors in p- and n-type large-area graphene films on a flexible plastic substrate (2019)
  • Author(s): Kanahashi Kaito、Ishihara Masatou、Hasegawa Masataka、Ohta Hiromichi、Takenobu Taishi
  • Journal Title: npj 2D Materials and Applications Volume: 3 Issue: 1 Pages: 44-44
  • DOI: 10.1038/s41699-019-0128-0
  • Peer Reviewed / Open Access
• [Journal Article] Ferroelectric oxide thin film with an out-of-plane electrical conductivity (2019)
  • Author(s): Tingting Yao, Yixiao Jiang, Chunlin Chen*, Xuexi Yan, Ang Tao, Lixin Yang, Chuihong Li, Kenyu Sugo, Hiromichi Ohta, Hengqiang Ye, Yuichi Ikuhara, Xiuliang Ma*
  • Journal Title: Nano Lett. Volume: 20 Issue: 2 Pages: 1047-1053
  • DOI: 10.1021/acs.nanolett.9b04210
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Oxide-based optical, electrical, and magnetic properties switching devices with water-incorporated gate insulator (2019)
  • Author(s): Takayoshi Katase and Hiromichi Ohta
  • Journal Title: Jpn. J. Appl. Phys. Volume: 58 Issue: 9 Pages: 090501-090501
  • DOI: 10.7567/1347-4065/ab02a5
  • NAID: 210000135460
  • Peer Reviewed
• [Journal Article] 薄い電子層を絶縁体でサンドイッチ：熱電変換特性を高める方法 (2019)
  • Author(s): 太田裕道, 張 雨橋
  • Journal Title: 車載テクノロジー Volume: 6 Pages: 38-38
• [Journal Article] Electron sandwich doubles the thermoelectric power factor of SrTiO3 (2019)
  • Author(s): Yuqiao Zhang, Hiromichi Ohta
  • Journal Title: physica status solidi (a) Volume: - Issue: 9
  • DOI: 10.1002/pssa.201800832
  • NAID: 120006843072
  • Peer Reviewed
• [Presentation] Fabrication and Thermoelectric Properties of Freestanding Ba1/3CoO2 Single Crystalline Films (2024)
  • Author(s): Kungwan Kang, Fumiaki Kato, Akitoshi Nakano, Ichiro Terasaki, Hyoungjeen Jeen, and Hiromichi Ohta
  • Organizer: 第59回 応用物理学会北海道支部 / 第20回 日本光学会北海道支部 合同学術講演会
• [Presentation] 単結晶BiFeO3自立膜の合成 (2024)
  • Author(s): 三津谷 怜, ゴン李治坤, 周イコン, 太田裕道, 片山 司
  • Organizer: 第59回 応用物理学会北海道支部 / 第20回 日本光学会北海道支部 合同学術講演会
• [Presentation] LaNiO3薄膜を活性層とする全固体熱トランジスタの作製 (2024)
  • Author(s): 吉村充生, 李 好博, 卞 志平, ジョンアロン, 曲 勇作, 田中秀和, 太田裕道
  • Organizer: 第59回 応用物理学会北海道支部 / 第20回 日本光学会北海道支部 合同学術講演会
• [Presentation] Modulation of Electron Transport Properties of Amorphous In-Zn-O Films with Varied Zn Concentrations (2024)
  • Author(s): Yuzhang Wu, Yusaku Magari, Prashant Ghediya, and Hiromichi Ohta
  • Organizer: 第59回 応用物理学会北海道支部 / 第20回 日本光学会北海道支部 合同学術講演会
• [Presentation] 反応性固相エピタキシャル成長法によるPb2MO3F薄膜(M = Fe, In)の合成 (2024)
  • Author(s): 丸野内 洸, 太田裕道, 片山 司
  • Organizer: 第59回 応用物理学会北海道支部 / 第20回 日本光学会北海道支部 合同学術講演会
• [Presentation] 大きな熱伝導率変化幅を示すCeO2全固体電気化学熱トランジスタ (2024)
  • Author(s): ジョンアロン, 卞 志平, 吉村充生, フウビン, 幾原雄一, 曲 勇作, 太田裕道
  • Organizer: 2024年 第71回 応用物理学会春季学術講演会, 東京都市大学 世田谷キャンパス,東京, 2024年3月22日-25日.
• [Presentation] 高電子熱伝導率LaNiO3薄膜を活性層とする全固体熱トランジスタの作製 (2024)
  • Author(s): 吉村充生, 李 好博, 卞 志平, ジョンアロン, 曲 勇作, 田中秀和, 太田裕道
  • Organizer: 2024年 第71回 応用物理学会春季学術講演会
• [Presentation] 反応性固相エピタキシャル成長法によるPb2MO3F薄膜(M = Fe, In)の合成 (2024)
  • Author(s): 丸野内 洸, 近松 彰, 太田裕道, 片山 司
  • Organizer: 2024年 第71回 応用物理学会春季学術講演会
• [Presentation] Difficulty of Bulk Ceramic Fabrication of Ba1/3CoO2 Showing High Thermoelectric ZT (2024)
  • Author(s): Kungwan Kang, Diwen Chen, Masato Imaizumi, Akitoshi Nakano, Chuchu Yang, Yuqiao Zhang, Yusaku Magari, Takashi Endo, Bin Feng, Yasutaka Matsuo, Yuichi Ikuhara, Ichiro Terasaki, Hiromichi Ohta
  • Organizer: 2024年 第71回 応用物理学会春季学術講演会
• [Presentation] Reliable Device Operation in High-Mobility Indium Oxide Thin Film Transistors (2024)
  • Author(s): Prashant Ghediya, Yusaku Magari, Takashi Endo, Mamoru Furuta, Yuqiao Zhang, Yasutaka Matsuo, Hiromichi Ohta
  • Organizer: 2024年 第71回 応用物理学会春季学術講演会
• [Presentation] Role of Zn Introduction in In2O3 TFTs -Suppression of Grain Boundary Scattering- (2024)
  • Author(s): Yuzhang Wu, Yusaku Magari, Prashant R. Ghediya, Yuqiao Zhang, Yasutaka Matsuo, Hiromichi Ohta
  • Organizer: 2024年 第71回 応用物理学会春季学術講演会
• [Presentation] Solid-State Electrochemical Thermal Transistors with Large Thermal Conductivity Switching Widths (2024)
  • Author(s): Zhiping Bian, Mitsuki Yoshimura, Ahrong Jeong, Haobo Li, Takashi Endo, Yasutaka Matsuo, Yusaku Magari, Hidekazu Tanaka, Hiromichi Ohta
  • Organizer: 2024年 第71回 応用物理学会春季学術講演会
• [Presentation] CeO2薄膜の電気化学酸化・還元-熱トランジスタの高性能化に向けて- (2024)
  • Author(s): ジョンアロン, 卞 志平, 吉村充生, フウビン, 幾原雄一, 曲 勇作, 太田裕道
  • Organizer: 2024年 第71回 応用物理学会春季学術講演会
• [Presentation] 新奇熱電半金属におけるソフトフォノンモードの観測 (2024)
  • Author(s): 中埜 彰俊, 寺崎 一郎, 長谷川 巧, 萬條 太駿, 石川 大介, Alfred Q. R. Baron
  • Organizer: 第6回 固体化学フォーラム研究会
• [Presentation] 181Ta-NQRによる熱電半金属Ta2PdSe6の研究 (2024)
  • Author(s): 八木 敦也, 小林 義明, 中埜 彰俊, 寺崎 一郎, 清水 康弘, 松下 琢
  • Organizer: 日本物理学会2024年春季大会
• [Presentation] Film Growth of Functional Oxide Thin Films and Their Applications towards Optoelectronics and Thermoelectrics (2023)
  • Author(s): Hiromichi Ohta
  • Organizer: Lecture at Jiangsu University
  • Int'l Joint Research / Invited
• [Presentation] 全固体電気化学熱トランジスタ：遷移金属酸化物の熱伝導率を電気的に切替える固体スイッチ (2023)
  • Author(s): 太田裕道
  • Organizer: 第84回 応用物理学会秋季学術講演会
  • Invited
• [Presentation] SrCoOx-based solid-state electrochemical thermal transistors (2023)
  • Author(s): Hiromichi Ohta
  • Organizer: International Conference on Condensed Matter and Device Physics (ICCMDP-2023)
  • Int'l Joint Research / Invited
• [Presentation] Functional oxide thin film growth and application -An introduction- (2023)
  • Author(s): Hiromichi Ohta
  • Organizer: Global Scholar Seminar for Emerging Semiconductor, Emerging Display, Automobile, and Energy
  • Int'l Joint Research / Invited
• [Presentation] A thermoelectric oxide, Ba1/3CoO2 (2023)
  • Author(s): Hiromichi Ohta
  • Organizer: 14th ISAJ Annual Symposium (Integrated Science for a Sustainable Society)
  • Int'l Joint Research / Invited
• [Presentation] Solid-State Electrochemical Thermal Transistors (2023)
  • Author(s): Hiromichi Ohta
  • Organizer: MRM2023/IUMRS-ICA2023
  • Int'l Joint Research / Invited
• [Presentation] Thermal Conductivity Modulation of SrCoOy-SrFeOy Solid Solution in Solid-State Electrochemical Thermal Transistors (2023)
  • Author(s): Zhiping Bian, Qian Yang, Mitsuki Yoshimura, Hai Jun Cho, Joonhyuk Lee, Hyoungjeen Jeen, Takashi Endo, Yasutaka Matsuo, and Hiromichi Ohta
  • Organizer: The 4th Workshop on Functional Materials Science (FMS2023)
  • Int'l Joint Research
• [Presentation] Direct measurement of in-plane thermal conductivity for freestanding Ba1/3CoO2 films (2023)
  • Author(s): Kungwan Kang, Fumiaki Kato, Ichiro Terasaki, Hyoungjeen Jeen, and Hiromichi Ohta
  • Organizer: The 4th Workshop on Functional Materials Science (FMS2023)
  • Int'l Joint Research
• [Presentation] Reduction of the Electrical Resistance of Solid-State Electrochemical Thermal Transistors (2023)
  • Author(s): Mitsuki Yoshimura, Qian Yang, Zhiping Bian, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: The 4th Workshop on Functional Materials Science (FMS2023)
  • Int'l Joint Research
• [Presentation] High-mobility In2O3 thin films and thin-film transistors deposited under varied base pressure by pulsed laser deposition (2023)
  • Author(s): Yusaku Magari, Prashant Ghediya, Hui Yang, Yuqiao Zhang, Yasutaka Matsuo, and Hiromichi Ohta
  • Organizer: 2023 Asia-Pacific Workshop on Advanced Semiconductor Devices (AWAD2023)
  • Int'l Joint Research
• [Presentation] Magnetic phase transition induced modulation of ferroelectric properties in hexagonal RFeO3 (R = Tb, Ho) system (2023)
  • Author(s): Yaoming Liu, Binjie Chen, Yosuke Hamasaki, Hiromichi Ohta, Tsukasa Katayama
  • Organizer: 第84回 応用物理学会秋季学術講演会
• [Presentation] 多結晶In2O3:H薄膜トランジスタ特性の固相結晶化雰囲気依存性 (2023)
  • Author(s): 曲 勇作, ゲディアプラシャント, 張 雨橋, 松尾保孝, 古田 守, 太田裕道
  • Organizer: 第84回 応用物理学会秋季学術講演会
• [Presentation] Negative Bias Stability Improvement of In2O3:H TFTs by Yttria Passivation (2023)
  • Author(s): Prashant Ghediya, Yusaku Magari, Yuqiao Zhang, Yasutaka Matsuo, Hiromichi Ohta
  • Organizer: 第84回 応用物理学会秋季学術講演会
• [Presentation] Direct Measurement of In-Plane Thermal Conductivity for Freestanding Oxide Films (2023)
  • Author(s): Kungwan Kang, Fumiaki Kato, Akitoshi Nakano, Ichiro Terasaki, Hyoungjeen Jeen, Hiromichi Ohta
  • Organizer: 第84回 応用物理学会秋季学術講演会
• [Presentation] Absence of High On-to-Off Thermal Conductivity Ratio in the LaxSr1-xCoOy-based Thermal Transistors (2023)
  • Author(s): Zhiping Bian, Mitsuki Yoshimura, Ahrong Jeong, Hiromichi Ohta
  • Organizer: 第84回 応用物理学会秋季学術講演会
• [Presentation] SrCoOx/YSZ-based Solid-State Electrochemical Thermal Transistors (2023)
  • Author(s): Hiromichi Ohta, Qian Yang, Hai Jun Cho, Zhiping Bian, Mitsuki Yoshimura, Joonhyuk Lee, Hyoungjeen Jeen, Jinghuang Lin, Jiake Wei, Bin Feng, Yuichi Ikuhara
  • Organizer: 29th International Workshop on Oxide Electronics (iWOE29)
  • Int'l Joint Research
• [Presentation] Solid-State Electrochemical Thermal Transistors with Perovskite Cobalt Oxide-based Solid Solutions as the Active Layers (2023)
  • Author(s): Zhiping Bian, Mitsuki Yoshimura, Qian Yang, Hai Jun Cho, Joonhyuk Lee, Hyoungjeen Jeen, Takashi Endo, Yasutaka Matsuo, and Hiromichi Ohta
  • Organizer: 29th International Workshop on Oxide Electronics (iWOE29)
  • Int'l Joint Research
• [Presentation] Direct Thermal Conductivity Measurement for Freestanding Ba1/3CoO2 and Sr1/3CoO2 Films in the In-plane direction (2023)
  • Author(s): Kungwan Kang, Fumiaki Kato, Akitoshi Nakano, Ichiro Terasaki, Hyoungjeen Jeen, and Hiromichi Ohta
  • Organizer: 29th International Workshop on Oxide Electronics (iWOE29)
  • Int'l Joint Research
• [Presentation] Thermal Conductivity Modulation in Sr1-xBaxCoOy Epitaxial Films (2023)
  • Author(s): Ahrong Jeong, Zhiping Bian, Mitsuki Yoshimura, and Hiromichi Ohta
  • Organizer: 29th International Workshop on Oxide Electronics (iWOE29)
  • Int'l Joint Research
• [Presentation] Fabrication and Thermoelectric Properties of Freestanding Ba1/3CoO2 Single Crystalline Films (2023)
  • Author(s): Kungwan Kang, Fumiaki Kato, Akitoshi Nakano, Ichiro Terasaki, Takashi Endo, Yasutaka Matsuo, Hyoungjeen Jeen, and Hiromichi Ohta
  • Organizer: 14th ISAJ Annual Symposium (Integrated Science for a Sustainable Society)
  • Int'l Joint Research
• [Presentation] 全固体電気化学熱トランジスタの開発 (2023)
  • Author(s): 太田裕道, 楊 倩, Hai Jun Cho, Zhiping Bian, 吉村充生, Joonhyuk Lee, Hyoungjeen Jeen, Jinghuang Lin, Jiake Wei, Bin Feng, 幾原雄一
  • Organizer: 第49回固体イオニクス討論会
• [Presentation] Solid-State Electrochemical Thermal Transistors with Alkaline Earth-ion substituted Strontium Cobaltite Films (2023)
  • Author(s): Ahrong Jeong, Zhiping Bian, Mitsuki Yoshimura, and Hiromichi Ohta
  • Organizer: 第49回固体イオニクス討論会
• [Presentation] LnNiO3（Ln = La, Pr, Nd, Sm）エピタキシャル薄膜の熱伝導率-全固体熱トランジスタの活性層探索- (2023)
  • Author(s): 吉村充生, 卞志平, ジョンアロン, 太田裕道
  • Organizer: 第49回固体イオニクス討論会
• [Presentation] Fabrication and thermoelectric properties of freestanding Ba1/3CoO2 single crystalline films (2023)
  • Author(s): Kungwan Kang, Fumiaki Kato, Akitoshi Nakano, Ichiro Terasaki, Takashi Endo, Yasutaka Matsuo, Hyoungjeen Jeen, and Hiromichi Ohta
  • Organizer: 第49回固体イオニクス討論会
• [Presentation] Alkaline earth-ion substituted strontium cobaltite films as solid-state electrochemical thermal transistors (2023)
  • Author(s): Ahrong Jeong, Zhiping Bian, Mitsuki Yoshimura, and Hiromichi Ohta
  • Organizer: The Mini-Workshop on Functional Materials Science (Organizers’ meeting)
  • Int'l Joint Research
• [Presentation] Al and Ga doping effects on ferroelectric and dielectric properties of BaTiO3 epitaxial films (2023)
  • Author(s): Ko Marunouchi, Lizhikun Gong, Hiromichi Ohta, and Tsukasa Katayama
  • Organizer: The Mini-Workshop on Functional Materials Science (Organizers’ meeting)
  • Int'l Joint Research
• [Presentation] Preparation and thermoelectric properties of freestanding Ba1/3CoO2 single crystalline films (2023)
  • Author(s): Kungwan Kang, Fumiaki Kato, Akitoshi Nakano, Ichiro Terasaki, Takashi Endo, Yasutaka Matsuo, Hyougjeen Jeen, and Hiromichi Ohta
  • Organizer: The Mini-Workshop on Functional Materials Science (Organizers’ meeting)
  • Int'l Joint Research
• [Presentation] Flexible epitaxial BaTiO3 films with bulk-like ferroelectricity and piezoelectricity (2023)
  • Author(s): Lithikun Gong, Hiromichi Ohta, and Tsukasa Katayama
  • Organizer: The Mini-Workshop on Functional Materials Science (Organizers’ meeting)
  • Int'l Joint Research
• [Presentation] Stability improvement of high-mobility In2O3:H TFTs by yttria passivation (2023)
  • Author(s): Prashant Ghediya, Yusaku Magari, Yuqiao Zhang, Yasutaka Matsuo, and Hiromichi Ohta
  • Organizer: The Mini-Workshop on Functional Materials Science (Organizers’ meeting)
  • Int'l Joint Research
• [Presentation] Thermal conductivity of LnNiO3 (Ln = La, Pr, Nd, and Sm) epitaxial films (2023)
  • Author(s): Mitsuki Yoshimura, Haobo Li, Zhiping Bian, Ahrong Jeong, Yusaku Magari, Hidekazu Tanaka, and Hiromichi Ohta
  • Organizer: The Mini-Workshop on Functional Materials Science (Organizers’ meeting)
  • Int'l Joint Research
• [Presentation] Modulation of electron transport properties of amorphous In-Zn-O films with varied Zn concentrations (2023)
  • Author(s): Yuzhang Wu, Yusaku Magari, Prashant Ghediya, and Hiromichi Ohta
  • Organizer: The Mini-Workshop on Functional Materials Science (Organizers’ meeting)
  • Int'l Joint Research
• [Presentation] Solid-state electrochemical thermal transistors with perovskite cobalt oxide-based solid solutions as the active layers (2023)
  • Author(s): Zhiping Bian, Mitsuki Yoshimura, Qian Yang, Hai Jun Cho, Joonhyuk Lee, Hyoungjeen Jeen, Takashi Endo, Yasutaka Matsuo, and Hiromichi Ohta
  • Organizer: The Mini-Workshop on Functional Materials Science (Organizers’ meeting)
  • Int'l Joint Research
• [Presentation] Alkaline Earth-ion Substituted Strontium Cobaltite Films as Solid-State Electrochemical Thermal Transistors (2023)
  • Author(s): Ahrong Jeong, Zhiping Bian, Mitsuki Yoshimura, and Hiromichi Ohta
  • Organizer: The 24th RIES-HOKUDAI International Symposium 開 [kai]
  • Int'l Joint Research
• [Presentation] Modulation of Electron Transport Properties of Amorphous In-Zn-O Films with Varied Zn Concentrations (2023)
  • Author(s): Yuzhang Wu, Yusaku Magari, Prashant Ghediya, and Hiromichi Ohta
  • Organizer: The 24th RIES-HOKUDAI International Symposium 開 [kai]
  • Int'l Joint Research
• [Presentation] Solid-State Electrochemical Thermal Transistors with Perovskite Cobaltate-based Solid Solutions as the Active Layers (2023)
  • Author(s): Zhiping Bian, Mitsuki Yoshimura, Qian Yang, Hai Jun Cho, Joonhyuk Lee, Hyoungjeen Jeen, Takashi Endo, Yasutaka Matsuo, and Hiromichi Ohta
  • Organizer: The 24th RIES-HOKUDAI International Symposium 開 [kai]
  • Int'l Joint Research
• [Presentation] Preparation and Thermoelectric Properties of Freestanding Ba1/3CoO2 Single Crystalline Films (2023)
  • Author(s): Kungwan Kang, Fumiaki Kato, Akitoshi Nakano, Ichiro Terasaki, Takashi Endo, Yasutaka Matsuo, Hyoungjeen Jeen, and Hiromichi Ohta
  • Organizer: The 24th RIES-HOKUDAI International Symposium 開 [kai]
  • Int'l Joint Research
• [Presentation] Thermal Conductivity of LnNiO3 (Ln = La, Pr, Nd, and Sm) Epitaxial Films - Towards High Performance Solid-State Electrochemical Thermal Transistors- (2023)
  • Author(s): Mitsuki Yoshimura, Haobo Li, Zhiping Bian, Ahrong Jeong, Yusaku Magari, Hidekazu Tanaka, and Hiromichi Ohta
  • Organizer: The 24th RIES-HOKUDAI International Symposium 開 [kai]
  • Int'l Joint Research
• [Presentation] Flexible BaTiO3 Epitaxial Films with Bulk-like Ferroelectricity and Piezoelectricity (2023)
  • Author(s): Lizhikun Gong, Atsushi Taguchi, Hiromichi Ohta, Tsukasa Katayama
  • Organizer: The 2023 RIES-CEFMS Joint International Symposium
  • Int'l Joint Research
• [Presentation] Solid-State Electrochemical Thermal Transistors with Perovskite Cobalt Oxide-based Solid Solutions as the Active Layers (2023)
  • Author(s): Zhiping Bian, Mitsuki Yoshimura, Qian Yang, Hai Jun Cho, Joonhyuk Lee, Hyoungjeen Jeen, Takashi Endo, Yasutaka Matsuo, Hiromichi Ohta
  • Organizer: The 2023 RIES-CEFMS Joint International Symposium
  • Int'l Joint Research
• [Presentation] Fabrication and Thermoelectric Properties of Freestanding Ba1/3CoO2 Single Crystalline Films (2023)
  • Author(s): Kungwan Kang, Fumiaki Kato, Akitoshi Nakano, Ichiro Terasaki, Takashi Endo, Yasutaka Matsuo, Hyoungjeen Jeen, Hiromichi Ohta
  • Organizer: The 2023 RIES-CEFMS Joint International Symposium
  • Int'l Joint Research
• [Presentation] Magnetic Phase Transition Induced Modulation of Ferroelectric Properties in Hexagonal RFeO3 (R = Tb, Ho) System (2023)
  • Author(s): Y. Liu, B. Chen, Y. Hamasaki, H. Ohta, T. Katayama
  • Organizer: The 2023 RIES-CEFMS Joint International Symposium
  • Int'l Joint Research
• [Presentation] Thermal Conductivity of RNiO3 (R = La, Nd, Pr, and Sm) Epitaxial Films (2023)
  • Author(s): Mitsuki Yoshimura, Zhiping Bian, Ahrong Jeong, Hiromichi Ohta
  • Organizer: The 2023 RIES-CEFMS Joint International Symposium
  • Int'l Joint Research
• [Presentation] Absence of High On-to-Off Thermal Conductivity Ratio in the LaxSr1-xCoOy-based Thermal Transistors (2023)
  • Author(s): Zhiping Bian, Mitsuki Yoshimura, Ahrong Jeong, Hiromichi Ohta
  • Organizer: MRM2023
  • Int'l Joint Research
• [Presentation] Ba1/3CoO2: A Promising Thermoelectric Oxide Showing a Reliable ZT of ~0.55 at 600 °C in Air (2023)
  • Author(s): Hiromichi Ohta, Xi Zhang, Yuqiao Zhang, Liao Wu, Akihiro Tsuruta, Masashi Mikami, Hai Jun Cho
  • Organizer: MRM2023
  • Int'l Joint Research
• [Presentation] Direct Measurement of In-Plane Thermal Conductivity for Freestanding Ba1/3CoO2 and Sr1/3CoO2 Films (2023)
  • Author(s): Kungwan Kang, Fumiaki Kato, Akitoshi Nakano, Ichiro Terasaki, Hyoungjeen Jeen, Hiromichi Ohta
  • Organizer: MRM2023
  • Int'l Joint Research
• [Presentation] Thermal Conductivity Suppression of Ga and In Co-Substituted Zinc Oxide Epitaxial Films (2023)
  • Author(s): Ahrong Jeong, Zhiping Bian, Hiromichi Ohta, Byung-Koog Jang
  • Organizer: MRM2023
  • Int'l Joint Research
• [Presentation] Significant Reduction in the Switching Time of Solid-State Electrochemical Thermal Transistors (2023)
  • Author(s): Mitsuki Yoshimura, Qian Yang, Zhiping Bian, Hiromichi Ohta
  • Organizer: MRM2023
  • Int'l Joint Research
• [Presentation] Strong Dependence of Solid-Phase Crystallization Atmosphere on the Performance of In2O3:H Thin Film Transistors (2023)
  • Author(s): Yusaku Magari, Prashant Ghediya, Yuqiao Zhang, Yasutaka Matsuo, Mamoru Furuta, Hiromichi Ohta
  • Organizer: MRM2023
  • Int'l Joint Research
• [Presentation] Origin of the Instability of High-Mobility Polycrystalline In2O3:H-based Thin Film Transistors (2023)
  • Author(s): Prashant Ghediya, Yusaku Magari, Yuqiao Zhang, Yasutaka Matsuo, Hiromichi Ohta
  • Organizer: MRM2023
  • Int'l Joint Research
• [Presentation] Semimetal thermoelectrics (2023)
  • Author(s): Ichiro Terasaki
  • Organizer: Mini Workshop on Functional Materials Science(Organaizers' Meeting)
  • Int'l Joint Research / Invited
• [Presentation] A guide towards high performance thermoelectric semimetals (2023)
  • Author(s): Akitoshi Nakano, Urara Maruoka, Fumiaki Kato, Ai Yamakage, Ichiro Terasaki
  • Organizer: MRM2023/IUMRS-ICA2023
  • Int'l Joint Research
• [Presentation] Thermoelectric property of uncompensated semimetal Ta2PdSe6 (2023)
  • Author(s): Akitoshi Nakano
  • Organizer: ISSP Regular Workshop: How high can we raise theromoelectric performance?
  • Int'l Joint Research / Invited
• [Presentation] Scattering time: the last black box (2023)
  • Author(s): Ichiro Terasaki
  • Organizer: ISSP Regular Workshop: How high can we raise theromoelectric performance?
  • Int'l Joint Research / Invited
• [Presentation] モット絶縁体VO2の非線形伝導と格子変形 (2023)
  • Author(s): 今和泉晶仁, 中埜彰俊, 寺崎一郎
  • Organizer: 日本物理学会第78回年次大会
• [Presentation] 77Se NMRによる熱電半金属Ta2PdSe6のS置換効果の研究 (2023)
  • Author(s): 八木敦也, 小林義明, 中埜彰俊, 寺崎一郎, 清水康弘, 松下琢
  • Organizer: 日本物理学会第78回年次大会
• [Presentation] Ta2PdS6における非線型伝導現象の観測 (2023)
  • Author(s): 服部奈菜子, 中埜彰俊, 寺崎一郎
  • Organizer: 日本物理学会第78回年次大会
• [Presentation] 新奇熱電半金属Ta2PdSe6の放射光非弾性X線散乱 (2023)
  • Author(s): 中埜彰俊, 長谷川巧, 萬條太駿, 石川大介, Alfred Q. R. Baron, 寺崎一郎
  • Organizer: 日本物理学会第78回年次大会
• [Presentation] 遷移金属硫化物Ta2PdS6の圧力誘起超伝導 (2023)
  • Author(s): 松本凌, 中埜彰俊, 寺嶋健成, 山本貴史, 山根和樹, 大隈理央, 寺崎一郎, 高野義彦
  • Organizer: 日本物理学会第78回年次大会
• [Presentation] 新奇熱電半金属 Ta2PdSe6 の熱伝導率 (2023)
  • Author(s): 中埜 彰俊，加藤 史章，寺崎 一郎
  • Organizer: 第20回日本熱電学会学術講演会
• [Presentation] 非補償伝導を示す半金属の熱電物性 (2023)
  • Author(s): 中埜彰俊
  • Organizer: 東京理科大学山本研究室 ナノカーボンセミナー
• [Presentation] モット絶縁体VO2の非線形伝導と格子変形 (2023)
  • Author(s): 今和泉晶仁
  • Organizer: 2023年（第17回）物性科学領域横断研究会（領域合同研究会）
• [Presentation] Nonlinear conduction and lattice deformation of Mott insulator VO2 (2023)
  • Author(s): Masato Imaizumi
  • Organizer: Mini Workshop on Functional Materials Science(Organaizers' Meeting)
  • Int'l Joint Research
• [Presentation] Nonlinear conduction of Ta2PdS6 (2023)
  • Author(s): Nanako Hattori
  • Organizer: Mini Workshop on Functional Materials Science(Organaizers' Meeting)
  • Int'l Joint Research
• [Presentation] Deep-UV transparent conducting SrSnO3 freestanding sheet using Al2O3 protection layer (2023)
  • Author(s): Lizhikun Gong, Mian Wei, Rui Yu, Hiromichi Ohta, Tsukasa Katayama
  • Organizer: 第58回応用物理学会北海道支部/第19回日本光学会北海道支部合同学術講演会
• [Presentation] PET基板に転写したBaxSr1-xTiO3シートの誘電特性 (2023)
  • Author(s): 于睿，ゴン李治坤, 太田裕道，片山司
  • Organizer: 第58回応用物理学会北海道支部/第19回日本光学会北海道支部合同学術講演会
• [Presentation] Antiferroic-to-ferroic phase transitions in spin and charge of hexagonal TbFeO3 film (2023)
  • Author(s): Y. Liu, B. Chen, H. Ohta, T. Katayama
  • Organizer: 第58回応用物理学会北海道支部/第19回日本光学会北海道支部合同学術講演会
• [Presentation] BaTiO3薄膜の強誘電特性へのGa及びAl置換効果 (2023)
  • Author(s): 丸野内洸, ゴン李治坤, 太田裕道, 片山司
  • Organizer: 第58回応用物理学会北海道支部/第19回日本光学会北海道支部合同学術講演会
• [Presentation] Orthorhombic Distortion Induced Insulator-to-Metal Transition Behavior of VO2/TiO2 Bilayer Films on (1-100) α-Al2O3 (2023)
  • Author(s): Binjie Chen, Gowoon Kim, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 7th International Conference on Advances in Functional Materials (AFM 2023)
  • Int'l Joint Research
• [Presentation] Ba1/3CoO2: A Thermoelectric Oxide Showing a Reliable ZT of ~0.55 at 600 °C in Air (2023)
  • Author(s): Xi Zhang, Yuqiao Zhang, Liao Wu, Akihiro Tsuruta, Masashi Mikami, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 7th International Conference on Advances in Functional Materials (AFM 2023)
  • Int'l Joint Research
• [Presentation] Electric Field Thermopower Modulation Analyses of High Mobility In-Sn-Zn-O Thin Film Transistors (2023)
  • Author(s): Hui Yang, Yuqiao Zhang, Yasutaka Matsuo, Hiromichi Ohta
  • Organizer: 7th International Conference on Advances in Functional Materials (AFM 2023)
  • Int'l Joint Research
• [Presentation] Faster Operation of SrCoOx-based Solid-State Electrochemical Thermal Transistors (2023)
  • Author(s): Mitsuki Yoshimura, Qian Yang, Zhiping Bian, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 7th International Conference on Advances in Functional Materials (AFM 2023)
  • Int'l Joint Research
• [Presentation] Electric Field Thermopower Modulation Analyses of the Operation Mechanism of Amorphous InGaO3(ZnO)m Thin Film Transistors (2023)
  • Author(s): Prashant R. Ghediya, Hui Yang, Takashi Fujimoto, Yuqiao Zhang, Yasutaka Matsuo, Hiromichi Ohta
  • Organizer: 7th International Conference on Advances in Functional Materials (AFM 2023)
  • Int'l Joint Research
• [Presentation] Solid-state Electrochemical Thermal Transistors using SrCoOy-SrFeOy Solid Solutions (2023)
  • Author(s): Zhiping Bian, Qian Yang, Mitsuki Yoshimura, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 7th International Conference on Advances in Functional Materials (AFM 2023)
  • Int'l Joint Research
• [Presentation] 全固体電気化学熱トランジスタ (2023)
  • Author(s): 楊 倩，ジョヘジュン，卞 志平, 吉村充生, イジュンヤク，ジンヒョンジン, 林 景煌, 魏 家科, 馮 斌, 幾原雄一, 太田裕道
  • Organizer: 第70回 応用物理学会 春季学術講演会
• [Presentation] 全固体熱トランジスタ特性に及ぼす固体電解質厚さの影響 (2023)
  • Author(s): 吉村充生，楊 倩, 卞 志平, ジョへジュン, 太田裕道
  • Organizer: 第70回 応用物理学会 春季学術講演会
• [Presentation] 全固体電気化学熱トランジスタの活性層Ⅰ: SrCoOx-SrFeOx固溶体 (2023)
  • Author(s): 卞 志平，楊 倩，吉村充生，イジュンヤク，ジンヒョンジン, 林 景煌, 馮 斌, 幾原雄一, ジョヘジュン, 太田裕道
  • Organizer: 第70回 応用物理学会 春季学術講演会
• [Presentation] 全固体電気化学熱トランジスタの活性層Ⅱ: SrCoOx-SrRuOx固溶体 (2023)
  • Author(s): 卞 志平，太田裕道
  • Organizer: 第70回 応用物理学会 春季学術講演会
• [Presentation] 高背圧下でのPLDによる高移動度In2O3薄膜作製 (2023)
  • Author(s): 曲 勇作，ゲディアプラシャント, 楊 卉, 張 雨橋, 松尾保孝, 太田裕道
  • Organizer: 第70回 応用物理学会 春季学術講演会
• [Presentation] 高背圧下PLDにより作製した高移動度In2O3薄膜を活性層とするTFT (2023)
  • Author(s): ゲディアプラシャント, 曲 勇作, 楊 卉, 張 雨橋, 松尾保孝, 太田裕道
  • Organizer: 第70回 応用物理学会 春季学術講演会
• [Presentation] 強誘電体HfO2-ZrO2ゲート透明InSnZnOx薄膜メモリー (2023)
  • Author(s): 楊 卉，Prashant Ghediya，張 雨橋，松尾保孝，曲 勇作，太田裕道
  • Organizer: 第70回 応用物理学会 春季学術講演会
• [Presentation] BaTiO3薄膜の強誘電特性へのGa及びAl置換効果 (2023)
  • Author(s): 丸野内洸，ゴン 李治坤，太田裕道，片山 司
  • Organizer: 第70回 応用物理学会 春季学術講演会
• [Presentation] 六方晶TbFeO3薄膜のスピン・電荷における反フェロ－フェロ相転移 (2023)
  • Author(s): Liu Yaoming，Chen Binjie，太田裕道，片山 司
  • Organizer: 第70回 応用物理学会 春季学術講演会
• [Presentation] Flexible BaTiO3 Epitaxial Films with Bulk-like Ferroelectricity and Piezoelectricity (2023)
  • Author(s): Lizhikun Gong, Bingjie Chen, Rui Yu, Hiromichi Ohta, Tsukasa Katayama
  • Organizer: 第70回 応用物理学会 春季学術講演会
• [Presentation] 新奇熱電半金属Ta2PdSe6の低温における異常熱伝導率の起源 (2023)
  • Author(s): 加藤史章、丸岡うらら、中埜彰俊、寺崎一郎
  • Organizer: 日本物理学会2023年春季大会
• [Presentation] 新奇熱電半金属Ta2PdSe6における異方的電気抵抗率の元素置換効果 (2023)
  • Author(s): 明石隼太朗、丸岡うらら、中埜彰俊、寺崎一郎
  • Organizer: 日本物理学会2023年春季大会
• [Presentation] 77SeNMRによる熱電半金属Ta2PdSe6の研究 (2023)
  • Author(s): 八木敦也、小林義明、寺崎一郎、中埜彰俊、清水康弘、松下琢
  • Organizer: 日本物理学会2023年春季大会
• [Presentation] Thermoelectric Properties of Conducting Oxide Thin Films (2022)
  • Author(s): Hiromichi Ohta
  • Organizer: Physics Seminar in Pusan National University
  • Int'l Joint Research / Invited
• [Presentation] Thermoelectric Oxide Thin Films (2022)
  • Author(s): Hiromichi Ohta
  • Organizer: 2022 Asian Conference on Nanoscience & Nanotechnology (AsiaNANO 2022)
  • Int'l Joint Research / Invited
• [Presentation] Solid-State Electrochemical Control of Oxygen Contents in Transition Metal Oxide Thin Films with Perovskite-Related Crystal Structure (2022)
  • Author(s): Hiromichi Ohta, Qian Yang, Gowoon Kim, and Xi Zhang
  • Organizer: 2022 MRS Spring Meeting and Exhibit
  • Int'l Joint Research
• [Presentation] Ba1/3CoO2: 空気中，600 °Cで信頼できるZT ~0.55を示す熱電酸化物 (2022)
  • Author(s): 張 習, 張 雨橋, 呉 礼奥, 鶴田彰宏, 三上祐史, ジョヘジュン, 太田裕道
  • Organizer: 第19回 日本熱電学会学術講演会
• [Presentation] Optoelectronic Properties of Orthorhombic-Distorted Nb:TiO2 Films (2022)
  • Author(s): Binjie Chen, Yuqiao Zhang, Katsuyuki Matsunaga, and Hiromichi Ohta
  • Organizer: The 22nd International Vacuum Congress (IVC-22)
  • Int'l Joint Research
• [Presentation] Ba1/3CoO2: 空気中，600 °Cで信頼できるZT ~0.55を示す熱電酸化物 (2022)
  • Author(s): 張 習, 張 雨橋, 呉 礼奥, 鶴田彰宏, 三上祐史, ジョヘジュン, 太田裕道
  • Organizer: 2022年 第83回 応用物理学会秋季学術講演会
• [Presentation] VO2/TiO2多層膜の段階的絶縁体/金属転移 (2022)
  • Author(s): 陳 斌杰，太田裕道
  • Organizer: 2022年 第83回 応用物理学会秋季学術講演会
• [Presentation] 高移動度InSnZnOx薄膜トランジスタの熱電能電界変調 (2022)
  • Author(s): 楊 卉，張 雨橋, 松尾保孝, 太田裕道
  • Organizer: 2022年 第83回 応用物理学会秋季学術講演会
• [Presentation] SrCoOx-SrFeOx固溶体薄膜の電気化学酸化・還元と熱・電子輸送特性 (2022)
  • Author(s): 卞 志平，楊 倩，吉村充生，ジョヘジュン, 太田裕道
  • Organizer: 2022年 第83回 応用物理学会秋季学術講演会
• [Presentation] Al2O3保護層を用いた深紫外透明導電性SrSnO3自立シートの作製 (2022)
  • Author(s): Lizhikun Gong, Mian Wei, Rui Yu, Hiromichi Ohta, Tsukasa Katayama
  • Organizer: 2022年 第83回 応用物理学会秋季学術講演会
• [Presentation] PET基板に転写されたBaxSr1-xTiO3 (x = 0.5)エピ膜の誘電特性 (2022)
  • Author(s): 于 睿，ゴン 李治坤, 太田裕道，片山 司
  • Organizer: 2022年 第83回 応用物理学会秋季学術講演会
• [Presentation] Room Temperature Insulator-to-Metal Transition of Strained VO2/TiO2 Multilayered Films (2022)
  • Author(s): Binjie Chen, Jinchuan Lin, Bin Feng, Yuichi Ikuhara, and Hiromichi Ohta
  • Organizer: 令和4年度日本セラミックス協会東北北海道支部研究発表会
• [Presentation] Thermopower Modulation Analyses of High-mobility InSnZnOx Thin-Film Transistors (2022)
  • Author(s): Hui Yang, Yuqiao Zhang, Yasutaka Matsuo, Yusaku Magari, and Hiromichi Ohta
  • Organizer: 令和4年度日本セラミックス協会東北北海道支部研究発表会
• [Presentation] Solid-State Electrochemical Thermal Transistors based on Sr(Co1-xFex)Oy (0 < x < 1, 2 < y < 3) Films as Active Layers (2022)
  • Author(s): Zhiping Bian, Qian Yang, Mitsuki Yoshimura, Joonhyuk Lee, Hyoungjeen Jeen, Jinghuang Lin, Bin Feng, Yuichi Ikuhara, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 令和4年度日本セラミックス協会東北北海道支部研究発表会
• [Presentation] 全固体熱トランジスタに及ぼす固体電解質厚さの影響 (2022)
  • Author(s): 吉村充生, 楊 倩, 卞 志平, ジョヘジュン, 太田裕道
  • Organizer: 令和4年度日本セラミックス協会東北北海道支部研究発表会
• [Presentation] Room Temperature Insulator-to-Metal Transition of Strained VO2/TiO2 Multilayered Films (2022)
  • Author(s): Binjie Chen and Hiromichi Ohta
  • Organizer: 薄膜材料デバイス研究会 第19回研究集会 in 京都
• [Presentation] Thermopower Modulation Analyses of High-mobility Transparent Amorphous Oxide Semiconductor InSnZnOx Thin-Film Transistors (2022)
  • Author(s): Hui Yang, Yuqiao Zhang, Yasutaka Matsuo, Yusaku Magari, and Hiromichi Ohta
  • Organizer: 薄膜材料デバイス研究会 第19回研究集会 in 京都
• [Presentation] Solid-State Electrochemical Thermal Transistors based on Sr(Co1-xFex)Oy (0 < x < 1, 2 < y < 3) Films as Active Layers (2022)
  • Author(s): Zhiping Bian, Qian Yang, Mitsuki Yoshimura, Joonhyuk Lee, Hyoungjeen Jeen, Jinghuang Lin, Bin Feng, Yuichi Ikuhara, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 薄膜材料デバイス研究会 第19回研究集会 in 京都
• [Presentation] 全固体熱トランジスタに及ぼす固体電解質厚さの影響 (2022)
  • Author(s): 吉村充生, 楊 倩, 卞 志平, ジョヘジュン, 太田裕道
  • Organizer: 薄膜材料デバイス研究会 第19回研究集会 in 京都
• [Presentation] Room Temperature Insulator-to-Metal Transition of Strained VO2/TiO2 Multilayered Films (2022)
  • Author(s): Binjie Chen, Hiromichi Ohta
  • Organizer: The 23rd RIES-Hokudai International Symposium 拓 [Taku]
  • Int'l Joint Research
• [Presentation] Origin of High-Mobility in Transparent Oxide Semiconductor Thin Film Transistors toward Super High-Definition Displays (2022)
  • Author(s): Hui Yang, Yuqiao Zhang, Yasutaka Matsuo, Yusaku Magari, and Hiromichi Ohta
  • Organizer: The 23rd RIES-Hokudai International Symposium 拓 [Taku]
  • Int'l Joint Research
• [Presentation] Low Voltage Operation of Solid-State Thermal Transistors (2022)
  • Author(s): Mitsuki Yoshimura, Qian Yang, Zhiping Bian, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: The 23rd RIES-Hokudai International Symposium 拓 [Taku]
  • Int'l Joint Research
• [Presentation] Electric Field Thermopower Modulation Analyses of Operation Mechanism of InGaO3(ZnO)m Thin Film Transistors (2022)
  • Author(s): Prashant Ghediya, Hui Yang, Takashi Fujimoto, Yuqiao Zhang, Yasutaka Matsuo, Yusaku Magari, and Hiromichi Ohta
  • Organizer: The 23rd RIES-Hokudai International Symposium 拓 [Taku]
  • Int'l Joint Research
• [Presentation] Thermal Conductivity Modulation in SrCoOy-SrFeOy Solid Solution by Electrochemical Redox Reaction (2022)
  • Author(s): Zhiping Bian, Qian Yang, Mitsuki Yoshimura, Joonhyuk Lee, Hyoungjeen Jeen, Jinghuang Lin, Bin Feng, Yuichi Ikuhara, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: The 23rd RIES-Hokudai International Symposium 拓 [Taku]
  • Int'l Joint Research
• [Presentation] Electric Field Thermopower Modulation Analyses of Transistor Characteristics of High-mobility In-Sn-Zn-O Thin Film Transistors (2022)
  • Author(s): Hui Yang, Yuqiao Zhang, Yasutaka Matsuo, Hiromichi Ohta
  • Organizer: The 29th International Display Workshops (IDW ’22)
  • Int'l Joint Research
• [Presentation] Electric Field Thermopower Modulation Analyses of Effective Channel Thickness of Amorphous InGaO3(ZnO)m Thin Film Transistors (2022)
  • Author(s): Prashant Ghediya, Hui Yang, Takashi Fujimoto, Yuqiao Zhang, Yasutaka Matsuo, Hiromichi Ohta
  • Organizer: The 29th International Display Workshops (IDW ’22)
  • Int'l Joint Research
• [Presentation] Giant Peltier conductivity in an uncompensated semimetal Ta2PdSe6 (2022)
  • Author(s): A. Nakano, A. Yamakage, U. Maruoka, Y. Yasui, and I. Terasaki
  • Organizer: 29th International Conference on LOW TEMPERATURE PHYSICS
• [Presentation] 遷移金属硫化物Ta2PdS6の熱電物性 (2022)
  • Author(s): 中埜彰俊、丸岡うらら、山影相、寺崎一郎
  • Organizer: TSJ2022 第19回日本熱電学会学術講演会
• [Presentation] ギャップレス半導体PbPdO2の元素置換効果 (2022)
  • Author(s): 荻山岳也、中埜彰俊、寺崎一郎
  • Organizer: 日本物理学会 2022年秋季大会
• [Presentation] 新奇熱電半金属Ta2PdSe6の低温熱伝導率 (2022)
  • Author(s): 加藤史章、丸岡うらら、中埜彰俊、寺崎一郎
  • Organizer: 日本物理学会 2022年秋季大会
• [Presentation] 新奇熱電半金属Ta2PdSe6の異方的電気輸送特性 (2022)
  • Author(s): 明石隼太朗、丸岡うらら、中埜彰俊、寺崎一郎
  • Organizer: 日本物理学会 2022年秋季大会
• [Presentation] 新奇熱電半金属Ta2PdSe6のNb置換効果 (2022)
  • Author(s): 中埜彰俊、丸岡うらら、寺崎一郎
  • Organizer: 日本物理学会 2022年秋季大会
• [Presentation] 角度分解光電子分光による遷移金属カルコゲナイドTa2Pd(Se1-xSx)6の電子状態観測 (2022)
  • Author(s): 大槻太毅、石田達拡、北村未歩、有田将司、中埜彰俊、丸岡うらら、寺崎一郎、吉田鉄平
  • Organizer: 日本物理学会 2022年秋季大会
• [Presentation] 機能コアを持つ新物質の開発 (2022)
  • Author(s): 寺崎一郎
  • Organizer: 日本金属学会2022年秋期(第171回)講演大会
  • Invited
• [Presentation] New Thermoelectric Semimetal Ta2PdSe6 (2022)
  • Author(s): I. Terasaki and A. Nakano
  • Organizer: 北海道大学電子科学研究所セミナー
  • Invited
• [Presentation] Solid-State Electrochemical Control of Physical Properties for Transition Metal Oxide Epitaxial Films with Perovskite-Related Crystal Structures (2022)
  • Author(s): Hiromichi Ohta, Qian Yang, Hyoungjeen Jeen
  • Organizer: The American Ceramic Society 2022 Conference on Electronic Materials and Applications (EMA 2022)
  • Int'l Joint Research / Invited
• [Presentation] (学術賞受賞講演) 電子伝導性酸化物の薄膜化と熱電特性に関する研究 (2022)
  • Author(s): 太田裕道
  • Organizer: 日本セラミックス協会 2022年 年会
  • Invited
• [Presentation] (講演奨励賞受賞講演) Single-Crystalline La:SrSnO3 Conductive Sheet with Wide Bandgap of 4.6 eV (2022)
  • Author(s): Mian Wei, Lizhikun Gong, Rui Yu, Hiromichi Ohta, Tsukasa Katayama
  • Organizer: 2022年 第69回 応用物理学会 春季学術講演会
  • Invited
• [Presentation] 熱電能電界変調法によるIGZOm薄膜トランジスタの動作特性解析 (2022)
  • Author(s): 藤本卓嗣, 太田裕道
  • Organizer: 第57回 応用物理学会北海道支部 第18回 日本光学会北海道支部 合同学術講演会
• [Presentation] 酸化物熱電材料Ba1/3CoO2エピタキシャル薄膜の高温熱電特性 (2022)
  • Author(s): 呉 礼奥, 張 習, 鶴田彰宏, 三上祐史, 張 雨橋, ジョヘジュン, 太田裕道
  • Organizer: 第57回 応用物理学会北海道支部 第18回 日本光学会北海道支部 合同学術講演会
• [Presentation] Room Temperature Insulator-to-Metal Transition of VO2/TiO2 Epitaxial Bilayers on (1-100) α-Al2O3 (2022)
  • Author(s): Binjie Chen, Gowoon Kim, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 日本セラミックス協会 第60回セラミックス基礎科学討論会
• [Presentation] 全固体熱トランジスタ (2022)
  • Author(s): 楊 倩, イジュンヤク, ジンヒョンジン, 魏 家科, 馮 斌, 幾原雄一, ジョヘジュン, 太田裕道
  • Organizer: 2022年 第69回 応用物理学会 春季学術講演会
• [Presentation] サファイアM面基板上に成長させたルチル型Nb:TiO2エピタキシャル薄膜の斜方晶歪みと光電子輸送特性 (2022)
  • Author(s): 陳 斌杰，張 雨橋，太田裕道
  • Organizer: 2022年 第69回 応用物理学会 春季学術講演会
• [Presentation] 熱電能電界変調法によるInGaO3(ZnO)m薄膜トランジスタの有効チャネル厚さ解析 (2022)
  • Author(s): 藤本卓嗣，太田裕道
  • Organizer: 2022年 第69回 応用物理学会 春季学術講演会
• [Presentation] 水溶性Sr3Al2O6層を利用したBa3/4Sr1/4TiO3自立膜の作製 (2022)
  • Author(s): 于 睿, ごん李治坤, 太田裕道, 片山 司
  • Organizer: 2022年 第69回 応用物理学会 春季学術講演会
• [Presentation] 導電性酸化物薄膜の熱電変換特性 (2021)
  • Author(s): 太田裕道
  • Organizer: 日本学術振興会 R025委員会 ８月研究会「エナジーハーベスティングデバイスの新材料・新構造・新プロセス（熱電変換，太陽電池）」
  • Invited
• [Presentation] Utilization of anisotropic materials in thermal management technologies (2021)
  • Author(s): Hai Jun Cho, Hiromichi Ohta
  • Organizer: International Conference on Condensed Matter and Device Physics ? 2021
  • Int'l Joint Research / Invited
• [Presentation] 反応性固相エピタキシャル成長法＋イオン交換法 -層状酸化物エピタキシャル薄膜を作る方法- (2021)
  • Author(s): 太田裕道
  • Organizer: 第82回 応用物理学会秋季学術講演会 シンポジウム「固相における秩序とは何か：機能を生み出す秩序の概念展開」（世話人：山本哲也 教授（高知工科大））
  • Invited
• [Presentation] Thermoelectric Properties of Tungsten Oxide Epitaxial Films (2021)
  • Author(s): Gowoon Kim, Bin Feng, Yu-Miin Sheu, Sangkyun Ryu, Hyoungjeen Jeen, Yuichi Ikuhara, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 2021 KPS Fall Meeting
  • Int'l Joint Research / Invited
• [Presentation] Thermoelectric Energy Conversion using Metal Oxide Thin Films (2021)
  • Author(s): Hiromichi Ohta
  • Organizer: The 22nd RIES-HOKUDAI International Symposium
  • Int'l Joint Research
• [Presentation] Late News: Ba1/3CoO2, a Promising Candidate for Oxide Thermoelectric Material (2021)
  • Author(s): Yuqiao Zhang, Yugo Takashima, Liao Wu, Jiake Wei, Bin Feng, Yuichi Ikuhara, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 2021 Virtual MRS Spring Meeting & Exhibit (Symposium NM08?Nanoscale Heat Transport?Fundamentals)
  • Int'l Joint Research
• [Presentation] Late News: Anisotropic Heat Conduction of Coherent Phonons in Defect-Free Superlattices (2021)
  • Author(s): Hai Jun Cho and Hiromichi Ohta
  • Organizer: 2021 Virtual MRS Spring Meeting & Exhibit (Symposium NM08?Nanoscale Heat Transport?Fundamentals)
  • Int'l Joint Research
• [Presentation] Tuning of the Optoelectronic Properties for Transparent Oxide Semiconductor ASnO3 by Modulating the Size of A-ions (21-3507) (2021)
  • Author(s): Mian Wei, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: The 8th International Congress on Ceramics (ICC8)
  • Int'l Joint Research
• [Presentation] Thermoelectric properties of 1D atomic defect tunnels stabilized tungsten oxide epitaxial film (25-3516) (2021)
  • Author(s): Gowoon Kim, Bin Feng, Yu-Miin Sheu, Sangkyun Ryu, Hyoungjeen Jeen, Yuichi Ikuhara, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: The 8th International Congress on Ceramics (ICC8)
  • Int'l Joint Research
• [Presentation] Direct observation of martensitic phase transformation of yttria stabilized zirconia induced by crack propagation (2021)
  • Author(s): Hiroaki Nakade, Eita Tochigi, Bin Feng, Hiromichi Ohta, Naoya Shibata, and Yuichi Ikuhara
  • Organizer: The 8th International Congress on Ceramics (ICC8)
  • Int'l Joint Research
• [Presentation] Reduction of the Tc and suppression of the ΔTc of VO2 epitaxial films on TiO2 buffered sapphire substrate (FF02) (2021)
  • Author(s): Binjie Chen, Gowoon Kim, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 63rd Electronic Materials Conference (EMC 2021)
  • Int'l Joint Research
• [Presentation] Electrochemical-redox-modulation of the oxygen content in superconducting YBa2Cu3O7-δ (FF03) (2021)
  • Author(s): Xi Zhang, Gowoon Kim, Qian Yang, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 63rd Electronic Materials Conference (EMC 2021)
  • Int'l Joint Research
• [Presentation] Modulation of Optical and Electronical Properties for Transparent Oxide Semiconductor ASnO3 by the A-site ion substitution (GG02) (2021)
  • Author(s): Mian Wei, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 63rd Electronic Materials Conference (EMC 2021)
  • Int'l Joint Research
• [Presentation] Lattice Strain and Insulator-to Metal Transition of VO2 / TiO2 Epitaxial Bilayer Films Grown on M-plane Sapphire Substrates (2021)
  • Author(s): B. Chen, G. Kim, H.J. Cho, H. Ohta
  • Organizer: 第82回 応用物理学会秋季学術講演会
• [Presentation] Reversible Redox Control of Optoelectronic Properties of Hexagonal Tungsten Oxide Epitaxial Films Grown on YSZ Solid Electrolyte (2021)
  • Author(s): G. Kim, H.J. Cho, H Ohta
  • Organizer: 第82回 応用物理学会秋季学術講演会
• [Presentation] Acoustic Vibrational Wave Transmissions at Metal-Superlattice Interfaces (2021)
  • Author(s): H.J. Cho, Y. Wu, J. Qi, Y. Kim, H. Ohta, O. Matsuda
  • Organizer: 第82回 応用物理学会秋季学術講演会
• [Presentation] Temperature Dependence of Thermoelectric Properties of Ba1/3CoO2 Epitaxial Films (2021)
  • Author(s): L. Wu, Y. Zhang, X. Zhang, H.J. Cho, H. Ohta
  • Organizer: 第82回 応用物理学会秋季学術講演会
• [Presentation] Solid-state electrochemical redox control of the optoelectronic properties for SrFeOx thin films (2021)
  • Author(s): Q. Yang, H.J. Cho, H. Jeen, H Ohta
  • Organizer: 第82回 応用物理学会秋季学術講演会
• [Presentation] High-Temperature Thermoelectric Figure of Merit of Ba1/3CoO2 Epitaxial Films (2021)
  • Author(s): X. Zhang, Y. Zhang, L. Wu, H.J. Cho, H. Ohta
  • Organizer: 第82回 応用物理学会秋季学術講演会
• [Presentation] Electrochemical Control of the Optoelectronic Properties of La-doped BaSnO3 Epitaxial Films using YSZ as the Solid Electrolyte (2021)
  • Author(s): M. Wei, H.J. Cho, H. Ohta
  • Organizer: 第82回 応用物理学会秋季学術講演会
• [Presentation] Single-Crystalline La:SrSnO3 Conductive Sheet with Wide Bandgap of 4.2 eV (2021)
  • Author(s): M. Wei, L. Gong, R. Yu, H.J. Cho, H. Ohta, T. Katayama
  • Organizer: 第82回 応用物理学会秋季学術講演会
• [Presentation] Ba1/3CoO2, A Promising High-Temperature Thermoelectric Oxide (2021)
  • Author(s): Xi Zhang, Yuqiao Zhang, Liao Wu, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 1st Japan-France Virtual Workshop on Thermoelectrics (VWT2021)
  • Int'l Joint Research
• [Presentation] Anomalously low heat conduction in single-crystal superlattice ceramics lower than randomly oriented polycrystals (2021)
  • Author(s): H.J. Cho, Y. Wu, Y. Zhang, B. Feng, M. Mikami, W. Shin, Y. Ikuhara, Y-M. Sheu, K. Saito, H. Ohta
  • Organizer: 1st Japan-France Virtual Workshop on Thermoelectrics (VWT2021)
  • Int'l Joint Research
• [Presentation] Solid-State Electrochemical Protonation Induced Phase Transition from SrCoO2.5 into HxSrCoO2.5 (x = 1, 1.5 and 2) (2021)
  • Author(s): Qian Yang, Joonhyuk Lee, Hyoungjeen Jeen, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 薄膜材料デバイス研究会 第18回研究集会 in 京都
• [Presentation] Temperature driven Anti- to Ferroelectric Phase Transition in Hexagonal DyFeO3 Films (2021)
  • Author(s): Binjie Chen, Tetsuya Hasegawa, Hiromichi Ohta, Tsukasa Katayama
  • Organizer: 薄膜材料デバイス研究会 第18回研究集会 in 京都
• [Presentation] Transfer of oxide electrode sheet with wide bandgap of 4.6 eV (2021)
  • Author(s): Lizhikun Gong, Mian Wei, Hiromichi Ohta, Tsukasa Katayama
  • Organizer: 薄膜材料デバイス研究会 第18回研究集会 in 京都
• [Presentation] Promising High Temperature Thermoelectric Properties of Ba1/3CoO2 (2021)
  • Author(s): Yuqiao Zhang, Xi Zhang, Liao Wu, Yugo Takashima, Jiake Wei, Bin Feng, Yuichi Ikuhara, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 12th International Conference on High-Performance Ceramics (CICC-12)
  • Int'l Joint Research
• [Presentation] 熱電能電界変調法によるIGZOm薄膜トランジスタの動作特性解析 (2021)
  • Author(s): 藤本卓嗣, 太田裕道
  • Organizer: 令和3年度日本セラミックス協会東北北海道支部研究発表会
• [Presentation] Ba1/3CoO2エピタキシャル薄膜の熱電特性の温度依存性 (2021)
  • Author(s): 呉 礼奥, 張 雨橋, 張 習, ジョ へジュン, 太田裕道
  • Organizer: 令和3年度日本セラミックス協会東北北海道支部研究発表会
• [Presentation] Transfer of oxide electrode sheet with wide bandgap of 4.6 eV (2021)
  • Author(s): L. Gong, M. Wei, H. Ohta, T. Katayama
  • Organizer: 令和3年度日本セラミックス協会東北北海道支部研究発表会
• [Presentation] Temperature induced Anti- to Ferroelectric Transition in Hexagonal DyFeO3 Films (2021)
  • Author(s): B. Chen, T. Hasegawa, H. Ohta, T. Katayama
  • Organizer: 令和3年度日本セラミックス協会東北北海道支部研究発表会
• [Presentation] (Li,La)TiO3対称傾角粒界における原子・電子構造およびイオン伝導特性 (2021)
  • Author(s): 佐々野駿，石川亮，太田裕道，柴田直哉，幾原雄一
  • Organizer: 第62回電池討論会
• [Presentation] Antiferroelectric to Ferroelectric Phase Transition in Hexagonal DyFeO3 Films (2021)
  • Author(s): Binjie Chen, Tetsuya Hasegawa, Hiromichi Ohta, Ts[ukasa Katayama
  • Organizer: The 22nd RIES-HOKUDAI International Symposium
  • Int'l Joint Research
• [Presentation] Transfer of oxide electrode sheet with wide bandgap of 4.6 eV (2021)
  • Author(s): Lizhikun Gong, Mian Wei, Hiromichi Ohta, Tsukasa Katayama
  • Organizer: The 22nd RIES-HOKUDAI International Symposium
  • Int'l Joint Research
• [Presentation] Temperature Dependence of Thermoelectric Properties of Ba1/3CoO2 Epitaxial Films (2021)
  • Author(s): Liao Wu, Yuqiao Zhang, Xi Zhang, Hai Jun Cho, Hiromichi Ohta
  • Organizer: The 22nd RIES-HOKUDAI International Symposium
  • Int'l Joint Research
• [Presentation] Electric Field Thermopower Modulation Analyses of the Electronic Structure of InGaO3(ZnO)m (m = integer) toward High-Performance Oxide TFTs (2021)
  • Author(s): Takashi Fujimoto, Hiromichi Ohta
  • Organizer: The 22nd RIES-HOKUDAI International Symposium
  • Int'l Joint Research
• [Presentation] 半金属Ta2PdSe6における巨大ペルチェ伝導度 (2021)
  • Author(s): 中埜彰俊、山影相、丸岡うらら、安井幸夫、寺崎一郎
  • Organizer: 第18回日本熱電学会学術講演会
• [Presentation] エキシトニック絶縁体Ta2NiSe5の異方的熱伝導 (2021)
  • Author(s): 加藤史章、丸岡うらら、中埜彰俊、寺崎一郎
  • Organizer: 日本物理学会2021年秋季大会
• [Presentation] レーザー変位計を用いたCa2RuO4の電流による変形特性 (2021)
  • Author(s): 森本大輔、中村文彦、中埜彰俊、寺崎一郎
  • Organizer: 日本物理学会2021年秋季大会
• [Presentation] 新規熱電半金属Ta2PdSe6の放射光X線結晶構造解析 (2021)
  • Author(s): 中埜彰俊、丸岡うらら、山影相、寺崎一郎
  • Organizer: 日本物理学会2021年秋季大会
• [Presentation] 遷移金属硫化物Ta2PdS6の熱電物性 (2021)
  • Author(s): 丸岡うらら、中埜彰俊、山影相、安井幸夫、寺崎一郎
  • Organizer: 日本物理学会2021年秋季大会
• [Presentation] Giant Peltier Conductivity in an uncomensated semimetal Ta2PdSe6 (2021)
  • Author(s): A. Nakano, A. Yamakage, U. Maruoka, Y. Yasui, and I. Terasaki
  • Organizer: OxideSuperspin 2021 (OSS2021)
  • Int'l Joint Research
• [Presentation] Non-equilibrium steady state in the electrical and thermal transport in the Mott insulator Ca2RuO4 (2021)
  • Author(s): I. Terasaki
  • Organizer: OxideSuperspin 2021 (OSS2021)
  • Int'l Joint Research / Invited
• [Presentation] New thermoelectric materials for autonomous sensors (2021)
  • Author(s): I. Terasaki
  • Organizer: 20th Science Council of Asia Conference
  • Int'l Joint Research / Invited
• [Presentation] New thermoelectric semimetal Ta2PdSe6 (2021)
  • Author(s): I. Terasaki and A. Nakano
  • Organizer: European Thermoelectric Network
  • Int'l Joint Research / Invited
• [Presentation] Microscopic view of hydrodynamics in nonlinear systems (2021)
  • Author(s): K. Saito
  • Organizer: Classical and Quantum Transport Processes
  • Int'l Joint Research / Invited
• [Presentation] 金属酸化物薄膜の熱電能・熱伝導 (2021)
  • Author(s): 太田裕道
  • Organizer: 2021年 第68回 応用物理学会春季学術講演会
  • Invited
• [Presentation] Anisotropy in the electrical conductivity of oxygen deficient WOx with 1D atomic defect tunnels (2021)
  • Author(s): G. Kim, B. Feng, S. Ryu, H. Jeen, H.J. Cho, Y. Ikuhara, and H. Ohta
  • Organizer: 第56回 応用物理学会北海道支部/第17回日本光学会北海道支部合同学術講演会
• [Presentation] Optoelectronic properties of La-doped CaSnO3-SrSnO3-BaSnO3 (2021)
  • Author(s): M. Wei. H.J. Cho, and H. Ohta
  • Organizer: 第56回 応用物理学会北海道支部/第17回日本光学会北海道支部合同学術講演会
• [Presentation] Realization of SrCoO2 epitaxial films by electrochemical reduction using YSZ solid electrolyte (2021)
  • Author(s): Q. Yang, J. Lee, H. Jeen, B. Feng, Y. Ikuhara, H.J. Cho, and H. Ohta
  • Organizer: 第56回 応用物理学会北海道支部/第17回日本光学会北海道支部合同学術講演会
• [Presentation] Modulation of the Metal-to-Insulator Transition Behavior of VO2 Epitaxial Films by Insertion of TiO2 Layers (2021)
  • Author(s): Binjie Chen, Gowoon Kim, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 第56回 応用物理学会北海道支部/第17回日本光学会北海道支部合同学術講演会
• [Presentation] 水素還元LaドープBaSnO3エピタキシャル薄膜のキャリア移動度向上 (2021)
  • Author(s): 藤本卓嗣, ジョヘジュン, 太田裕道
  • Organizer: 第56回 応用物理学会北海道支部/第17回日本光学会北海道支部合同学術講演会
• [Presentation] Phonon-Glass and Electron-Crystal Behavior of WOx Films containing 1D Atomic Defect Tunnels (2021)
  • Author(s): Gowoon Kim, Bin Feng, Yuichi Ikuhara, Yu-Miin Sheu, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: Electronic Materials and Applications 2021 (EMA2021)
  • Int'l Joint Research
• [Presentation] Solid-state Electrochemical Protonation / Oxidation of SrCoOx Films (2021)
  • Author(s): Qian Yang, Joonhyuk Lee, Hyoungjeen Jeen, Bin Feng, Yuichi Ikuhara, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: Electronic Materials and Applications 2021 (EMA2021)
  • Int'l Joint Research
• [Presentation] Modulation of the Metal-to-Insulator Transition Behavior of VO2 Films (2021)
  • Author(s): Binjie Chen, Gowoon Kim, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 2021年 第68回 応用物理学会春季学術講演会
• [Presentation] Thermoelectric Properties of Tungsten Oxide Films with 1D Atomic Defect Tunnels (2021)
  • Author(s): Gowoon Kim, Bin Feng, Yu-Miin Sheu, Sangkyun Ryu, Hyoungjeen Jeen, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 2021年 第68回 応用物理学会春季学術講演会
• [Presentation] Band Engineering of Transparent Oxide Semiconductor ASnO3 (A = Ba, Ca, and Sr) (2021)
  • Author(s): Mian Wei, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 2021年 第68回 応用物理学会春季学術講演会
• [Presentation] Electrochemical Redox reaction of SrCoO2.5 films using YSZ oxide ion conductor (2021)
  • Author(s): Q. Yang, J. Lee, H. Jeen, J. Wei, B. Feng, Y. Ikuhara, H.J. Cho, and H. Ohta
  • Organizer: 2021年 第68回 応用物理学会春季学術講演会
• [Presentation] Electrochemical modulation of superconducting properties in YBa2Cu3O7-δ Films (2021)
  • Author(s): Xi Zhang, Gowoon Kim, Qian Yang, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 2021年 第68回 応用物理学会春季学術講演会
• [Presentation] Temperature Dependence of Thermoelectric Properties of Ba1/3CoO2 Epitaxial Films (2021)
  • Author(s): Y. Zhang, Y. Takashima, L. Wu, H.J. Cho, and H. Ohta
  • Organizer: 2021年 第68回 応用物理学会春季学術講演会
• [Presentation] Anomalously Low Heat Conduction in Single-Crystal Superlattice Ceramics Lower than Randomly Oriented Polycrystals (2021)
  • Author(s): Y. Wu, H.J. Cho, Y. Zhang, B. Feng, M. Mikami, W. Shin, Y. Ikuhara, Y. Sheu, K. Saito, and H. Ohta
  • Organizer: 2021年 第68回 応用物理学会春季学術講演会
• [Presentation] Anisotropic Heat Conduction of Coherent Phonons in Superlattices (2021)
  • Author(s): Hai Jun Cho, Youngha Kwon, Yuzhang Wu, and Hiromichi Ohta
  • Organizer: 2021年 第68回 応用物理学会春季学術講演会
• [Presentation] Ru置換Cr2O3薄膜における絶縁体金属転移とRu3+状態 (2021)
  • Author(s): 藤原宏平, 北村未歩, 志賀大亮, 丹羽尉博, 堀場弘司, 野島 勉, 太田裕道, 組頭広志, 塚﨑 敦
  • Organizer: 2021年 第68回 応用物理学会春季学術講演会
• [Presentation] 熱電材料の物理 (2021)
  • Author(s): 寺崎一郎
  • Organizer: はじめての熱電変換 日本熱電学会オンデマンドセミナー
  • Invited
• [Presentation] ハーマン法を応用したCa2RUO4のペルチェ係数測定 (2021)
  • Author(s): 佐野五十鈴, 中村文彦, 中埜彰俊, 谷口博基, 寺崎一郎
  • Organizer: 日本物理学会第76回年次大会 2021年3月12日～15日 オンライン
• [Presentation] レーザー変位計を用いたCa2RuO4の熱膨張係数測定 (2021)
  • Author(s): 森本大輔, 中村文彦, 中埜彰俊, 谷口博基, 寺崎一郎
  • Organizer: 日本物理学会第76回年次大会 2021年3月12日～15日 オンライン
• [Presentation] 層状遷移金属カルコゲナイドTa2PdSe6の巨大電力因子 (2021)
  • Author(s): 中埜彰俊, 丸岡うらら, 谷口博基, 寺崎一郎
  • Organizer: 日本物理学会第76回年次大会 2021年3月12日～15日 オンライン
• [Presentation] 新規熱電半金属Ta2PdSe6のS置換効果 (2021)
  • Author(s): 丸岡うらら, 中埜彰俊, 谷口博基, 寺崎一郎
  • Organizer: 日本物理学会第76回年次大会 2021年3月12日～15日 オンライン
• [Presentation] 層状酸化物Ba1/3CoO2エピタキシャル薄膜の作製と熱電特性 (2020)
  • Author(s): 高嶋佑伍, Yuqiao Zhang, Jiake Wei, Bin Feng, 幾原雄一, Hai Jun Cho, 太田裕道
  • Organizer: 応用物理学会 KOSEN SC 第1回VR学術講演会
• [Presentation] Branching of Electrical and Thermal Conductivities in La- and Nb-substituted SrTiO3 (2020)
  • Author(s): Y. Zhang, H.J. Cho, K. Sugo, M. Mikami, S. Woo, M.-C. Jung, Y.-H. Zhuang, B. Feng, Y.-M. Sheu, W. Shin, W.S. Choi, M.J. Han, Y. Ikuhara, and H. Ohta
  • Organizer: Virtual Conference on Thermoelectrics (VCT 2020)
  • Int'l Joint Research
• [Presentation] Fabrication and Characterization of Ba1/3CoO2 Epitaxial Films Exhibiting Thermoelectric ZT = 0.12 at Room Temperature (2020)
  • Author(s): Yugo Takashima, Yu-qiao Zhang, Jiake Wei, Bin Feng, Yuichi Ikuhara, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: THE 27th INTERNATIONAL WORKSHOP ON ACTIVE-MATRIX FLAT PANEL DISPLAYS AND DEVICES (AM-FPD20)
  • Int'l Joint Research
• [Presentation] Fabrication and Operating Mechanism of Deep-UV Transparent Semiconducting SrSnO3-based Thin Film Transistor (2020)
  • Author(s): Lizhikun Gong, Mian Wei, Dou-dou Liang, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: THE 27th INTERNATIONAL WORKSHOP ON ACTIVE-MATRIX FLAT PANEL DISPLAYS AND DEVICES (AM-FPD20)
  • Int'l Joint Research
• [Presentation] イオン置換を施した層状コバルト酸化物AxCoO2の異方的熱伝導率 (2020)
  • Author(s): 太田裕道, 高嶋佑伍, 小野里尚記, ジョ ヘジュン
  • Organizer: 日本セラミックス協会 第33回秋季シンポジウム
• [Presentation] Electric Field Thermopower Modulation Analyses of the Channel Thickness for SnO2 Thin Film Transistors (2020)
  • Author(s): Doudou Liang, Binjie Chen, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 2020年 第81回応用物理学会秋季学術講演会
• [Presentation] Solid-State Electrochemical Protonation/Oxidation of Oxygen Sponge SrCoO2.5 Films (2020)
  • Author(s): Qian Yang, Bin Feng, Yuichi Ikuhara, Hyoungjeen Jeen, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 2020年 第81回応用物理学会秋季学術講演会
• [Presentation] 側鎖変調されたポリチオフェンドープ 膜の構造と伝導特性 (2020)
  • Author(s): 伊藤駿一郎, 中嶋大志, 金橋魁利, 田中久暁, 太田裕道, 竹延大志
  • Organizer: 2020年 第81回応用物理学会秋季学術講演会
• [Presentation] 深紫外透明SrSnO3薄膜トランジスタの作製と熱電能電界変調 (2020)
  • Author(s): ごん李治坤, 魏 冕, 梁 豆豆, Hai Jun Cho, 太田裕道
  • Organizer: 日本金属学会 2020年秋期(第167回)講演大会
• [Presentation] 層状酸化物Ba1/3CoO2エピタキシャル薄膜の作製と熱電特性 (2020)
  • Author(s): 高嶋佑伍, 張 雨橋, 魏 家科, 馮 斌, 幾原雄一, Hai Jun Cho, 太田裕道
  • Organizer: 日本金属学会 2020年秋期(第167回)講演大会
• [Presentation] Suppression of Anisotropic Heat Conduction in Ion-substituted Layered Cobalt Oxides (2020)
  • Author(s): Hiromichi Ohta, Hai Jun Cho, Yugo Takashima, Takaki Onozato
  • Organizer: Pacific Rim Meeting on Electrochemical and Solid State Science (PRiME 2020)
  • Int'l Joint Research
• [Presentation] High Electron and Low Heat Transports of 1D Atomic Defect Tunnels Stabilized in Tungsten Oxide Epitaxial Films (2020)
  • Author(s): Gowoon Kim, Bin Feng, Yu-Miin Sheu, Hai Jun Cho, Yuichi Ikuhara, and Hiromichi Ohta
  • Organizer: Pacific Rim Meeting on Electrochemical and Solid State Science (PRiME 2020)
  • Int'l Joint Research
• [Presentation] Electric field thermopower modulation analyses of the operation mechanism of transparent amorphous SnO2 thin-film transistor (2020)
  • Author(s): Dou-dou Liang, Yu-qiao Zhang, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: Pacific Rim Meeting on Electrochemical and Solid State Science (PRiME 2020)
  • Int'l Joint Research
• [Presentation] Electrochemical Manipulation of the Electron Transports of SrCoOx Epitaxial Films (2020)
  • Author(s): Qian Yang，Hai Jun Cho，Hyoungjeen Jeen，Hiromichi Ohta
  • Organizer: Pacific Rim Meeting on Electrochemical and Solid State Science (PRiME 2020)
  • Int'l Joint Research
• [Presentation] 新しい透明酸化物半導体LaドープBaSnO3薄膜 -微細構造，化学結合状態，電子輸送特性に及ぼす熱処理の影響- (2020)
  • Author(s): 藤本卓嗣, ジョへジュン, 太田裕道
  • Organizer: 第5回 北海道大学 部局横断シンポジウム－新世代の融合研究を目指して－
• [Presentation] Heat and Electron Transports of 1D Atomic Defect Tunnels Stabilized in WOx Films (2020)
  • Author(s): Gowoon Kim, Bin Feng, Yuichi Ikuhara, Yu-Miin Sheu, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 薄膜材料デバイス研究会 第17回研究会「薄膜デバイスの原点」
• [Presentation] Electrochemical Protonation / Oxidation of SrCoO2.5 Films using CAN as the Solid Electrolyte (2020)
  • Author(s): Qian Yang, Joonhyuk Lee, Hyoungjeen Jeen, Bin Feng, Yuichi Ikuhara, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 薄膜材料デバイス研究会 第17回研究会「薄膜デバイスの原点」
• [Presentation] 室温で ZT = 0.11を示すBa1/3CoO2 エピタキシャル薄膜の作製と評価 (2020)
  • Author(s): 高嶋佑伍, 張 雨橋, 魏 家科, 馮 斌, 幾原雄一, Hai Jun Cho, 太田裕道
  • Organizer: 薄膜材料デバイス研究会 第17回研究会「薄膜デバイスの原点」
• [Presentation] Structure and Charge Transport Analyses in Ionic-Liquid-Gated Conducting Polymer Thin Films with 2D-Ordered Crystallites (2020)
  • Author(s): Shun-ichiro Ito, Kaito Kanahashi, Hisaaki Tanaka, Hiroshi Ito, Hiromichi Ohta, and Taishi Takenobu
  • Organizer: 33rd International Microprocess and Nanotechnology Conference (MNC2020)
  • Int'l Joint Research
• [Presentation] Heat and electron transports of 1D atomic defect tunnels stabilized in tungsten oxide epitaxial films (2020)
  • Author(s): Gowoon Kim, Bin Feng, Yuichi Ikuhara, Yu-Miin Sheu, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 令和2年度 日本セラミックス協会 東北北海道支部 研究発表会
• [Presentation] Metal-to-insulator transition temperature reduction of VO2 films by inserting TiO2 layers (2020)
  • Author(s): Binjie Chen, Gowoon Kim, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: 令和2年度 日本セラミックス協会 東北北海道支部 研究発表会
• [Presentation] LaドープBaSnO3薄膜の微細構造，化学結合状態，電子輸送特性に及ぼす熱処理の影響 (2020)
  • Author(s): 藤本卓嗣, ジョヘジュン, 太田裕道
  • Organizer: 令和2年度 日本セラミックス協会 東北北海道支部 研究発表会
• [Presentation] 室温で熱電変換性能指数ZT = 0.11を示す層状コバルト酸化物エピタキシャル薄膜 (2020)
  • Author(s): 張 雨橋, 高嶋佑伍, 魏 家科, 馮 斌, 幾原雄一, ジョヘジュン, 太田裕道
  • Organizer: 第14回物性科学領域横断研究会
• [Presentation] 酸化タングステンエピタキシャル薄膜中で安定化された1次元原子欠陥トンネルの異方性電子輸送 (2020)
  • Author(s): キムゴウン，フウビン，リュサンギュン，ジンヒョンジン，ジョヘジュン，幾原雄一，太田裕道
  • Organizer: 第14回物性科学領域横断研究会
• [Presentation] (Li,La)TiO3対称傾角粒界における原子・電子構造とリチウムイオン伝導物性 (2020)
  • Author(s): 佐々野駿, 石川亮, 太田裕道, 柴田直哉, 幾原雄一
  • Organizer: 第14回物性科学領域横断研究会
• [Presentation] Reduction of Metal-to-Insulator Transition Temperature of VO2 Films by Inserting TiO2 Layers (2020)
  • Author(s): Binjie Chen, Gowoon Kim, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: The 21st RIES-Hokudai International Symposium 間 [ma]
  • Int'l Joint Research
• [Presentation] Large Anisotropy of Electron Transport in Oxygen Deficient Tungsten Oxide Epitaxial Films with 1D Atomic Defect Tunnels (2020)
  • Author(s): Gowoon Kim, Bin Feng, Sangkyun Ryu, Hai Jun Cho, Hyoungjeen Jeen, Yuichi Ikuhara, and Hiromichi Ohta
  • Organizer: The 21st RIES-Hokudai International Symposium 間 [ma]
  • Int'l Joint Research
• [Presentation] Electrochemical Redox Control of SrCoOx Epitaxial Films using YSZ as the Solid Electrolyte (2020)
  • Author(s): Qian Yang, Joonhyuk Lee, Hyoungjeen Jeen, Bin Feng, Yuichi Ikuhara, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: The 21st RIES-Hokudai International Symposium 間 [ma]
  • Int'l Joint Research
• [Presentation] Effect of heat treatment on the microstructure, electron transport properties and chemical bonding states of La-doped BaSnO3 films (2020)
  • Author(s): Takashi Fujimoto, Hai Jun Cho, and Hiromichi Ohta
  • Organizer: The 21st RIES-Hokudai International Symposium 間 [ma]
  • Int'l Joint Research
• [Presentation] Electron and heat transport properties of BaTiO3-BaNbO3 solid solution epitaxial films (2020)
  • Author(s): Yuqiao Zhang, Hai Jun Cho and Hiromichi Ohta
  • Organizer: The 21st RIES-Hokudai International Symposium 間 [ma]
  • Int'l Joint Research
• [Presentation] モット絶縁体Ca2RuO4の非線形伝導下の熱電効果 (2020)
  • Author(s): 寺崎一郎，岡崎竜二，中村文彦
  • Organizer: 日本熱電学会 第17回学術講演会, 2020年9月28日～30日 オンライン
• [Presentation] Fluctuating hydrodynamics in lattice systems: microscopic view and thermodynamics (2020)
  • Author(s): K. Saito
  • Organizer: Stochastic thermodynamics in complex systems, Vienna, (May27-29, 2020)
  • Int'l Joint Research / Invited
• [Presentation] SU(2)近藤効果における温度誘起電流ノイズ (2020)
  • Author(s): 長谷川雅大, 齊藤圭司
  • Organizer: 日本物理学会 2020年秋季大会 オンライン開催 2020年9月8～11日
• [Presentation] Electron transport properties of wide bandgap transparent oxide semiconductor, BaSnO3-SrSnO3 (2020)
  • Author(s): Hiromichi Ohta
  • Organizer: The 12th International Workshop on Oxide Surfaces: IWOX-XII
  • Int'l Joint Research / Invited
• [Presentation] A WO3-based electrochromic transistor on PET substrate (2020)
  • Author(s): Takaki Onozato, Hai Jun Cho, Hiromichi Ohta
  • Organizer: The 12th International Workshop on Oxide Surfaces: IWOX-XII
• [Presentation] 深紫外透明酸化物半導体を活性層とする薄膜トランジスタの作製と熱電能電界変調 (2020)
  • Author(s): Lizhikun Gong, Dou-dou Liang, Mian Wei, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 第55回応用物理学会北海道支部/第16回日本光学会北海道支部合同学術講演会
• [Presentation] 熱電能電界変調法によるアモルファスSnO2透明薄膜トランジスタ動作解析 (2020)
  • Author(s): Dou-dou Liang, Yu-qiao Zhang, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 第55回応用物理学会北海道支部/第16回日本光学会北海道支部合同学術講演会
• [Presentation] Clarification of anisotropic heat transport in a natural oxide superlattice InGaO3(ZnO)m (2020)
  • Author(s): Yuzhang Wu, Hai Jun Cho, Bin Feng, Masashi Mikami, Woosuck Shin, Yuichi Ikuhara, Keiji Saito, Hiromichi Ohta
  • Organizer: 第55回応用物理学会北海道支部/第16回日本光学会北海道支部合同学術講演会
• [Presentation] Sr1-xLaxTiO3全率固溶体エピタキシャル薄膜の熱電特性の解明 (2020)
  • Author(s): 須郷堅雄, Yu-qiao Zhang, Hai Jun Cho, 太田裕道
  • Organizer: 第55回応用物理学会北海道支部/第16回日本光学会北海道支部合同学術講演会
• [Presentation] 配向の異なる層状コバルト酸化物エピタキシャル薄膜の熱伝導率 (2020)
  • Author(s): 高嶋佑伍, 小野里尚記, Hai Jun Cho, 太田裕道
  • Organizer: 第55回応用物理学会北海道支部/第16回日本光学会北海道支部合同学術講演会
• [Presentation] 高電気伝導率を示すMagneli WOx薄膜の異常低熱伝導率 (2020)
  • Author(s): Gowoon Kim, Bin Feng, Hai Jun Cho, Yuichi Ikuhara, Hiromichi Ohta
  • Organizer: 第55回応用物理学会北海道支部/第16回日本光学会北海道支部合同学術講演会
• [Presentation] 熱電特性と導電性AFMによるSrCoOxの電気化学反応の巨視的可視化 (2020)
  • Author(s): 楊 倩, Hai Jun Cho, Hyoungjeen Jeen, 太田裕道
  • Organizer: 第55回応用物理学会北海道支部/第16回日本光学会北海道支部合同学術講演会
• [Presentation] 情報記憶材料SrCoOx薄膜における電気化学酸化反応の巨視的可視化 (2020)
  • Author(s): 楊 倩, Hai Jun Cho, Hyoungjeen Jeen, 太田裕道
  • Organizer: 化学系学協会北海道支部2020年冬季研究発表会
• [Presentation] 層状コバルト酸化物AxCoO2 (A ＝ Li, Na, Ca, Sr) 薄膜の熱電特性の結晶方位依存性 (2020)
  • Author(s): 高嶋佑伍, 小野里尚記, Hai Jun Cho, 太田裕道
  • Organizer: 化学系学協会北海道支部2020年冬季研究発表会
• [Presentation] Fabrication and thermopower modulation of deep-ultraviolet transparent SrSnO3 thin film transistor (2020)
  • Author(s): Lizhikun Gong, Dou-dou Liang, Mian Wei, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 化学系学協会北海道支部2020年冬季研究発表会
• [Presentation] Phonon-Glass Electron-Crystal behavior in Magneli tungsten oxide (2020)
  • Author(s): Gowoon Kim, Hai Jun Cho, Bin Feng, Yuichi Ikuhara, Hiromichi Ohta
  • Organizer: 第67回 応用物理学会春季学術講演会
• [Presentation] Electric field thermopower modulation analyses of the operation mechanism of amorphous SnO2 thin film transistor (2020)
  • Author(s): Dou-dou Liang, Yu-qiao Zhang, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 第67回 応用物理学会春季学術講演会
• [Presentation] 層状コバルト酸化物薄膜の熱電変換性能指数増強 (2020)
  • Author(s): 高嶋佑伍, 小野里尚記, Hai Jun Cho, 太田裕道
  • Organizer: 第67回 応用物理学会春季学術講演会
• [Presentation] Electron transport properties of transparent oxide semiconductor, BaSnO3-SrSnO3: Epitaxial films and thin film transistors (2019)
  • Author(s): Hiromichi Ohta, Anup V. Sanchela
  • Organizer: EM-NANO 2019
  • Int'l Joint Research / Invited
• [Presentation] Thermoelectric properties of two-dimensional electron system -superlattices and TFT channel- (2019)
  • Author(s): Hiromichi Ohta
  • Organizer: 2019 Asia-Pacific Workshop on Fundamentals and Applications of Advanced Semiconductor Devices (AWAD 2019)
  • Int'l Joint Research / Invited
• [Presentation] Double enhancement of thermoelectric power factor in SrTiO3 based electron sandwitch (2019)
  • Author(s): Hiromichi Ohta, Yuqiao Zhang
  • Organizer: 4th Functional Oxide Thin Films for Advanced Energy and Information Technology Conference
  • Int'l Joint Research / Invited
• [Presentation] 透明酸化物半導体BaSnO3-SrSnO3の電子輸送-エピタキシャル薄膜と薄膜トランジスタ- (2019)
  • Author(s): 太田裕道
  • Organizer: 日本金属学会 2019年秋期(第165回)講演大会
  • Invited
• [Presentation] 酸化物を使った電界（電解）効果トランジスタの開発 (2019)
  • Author(s): 太田裕道
  • Organizer: 日本セラミックス協会東北北海道支部 第27回北海道地区セミナー2019
  • Invited
• [Presentation] Single Crystalline Film Growth of Layer Structured Oxides and Their Phonon Transports (2019)
  • Author(s): Hiromichi Ohta, Hai Jun Cho, Yuzhang Wu, Bin Feng, Masashi Mikami, Woosuck Shin, Yuichi Ikuhara, Keiji Saito
  • Organizer: 2019 MRS Fall Meeting
  • Int'l Joint Research / Invited
• [Presentation] SrCoO2.5エピタキシャル薄膜の電気化学酸化と電子輸送特性 (2019)
  • Author(s): 楊 倩，Hai Jun Cho，Hyoungjeen Jeen，太田裕道
  • Organizer: 2019年 第80回応用物理学会秋季学術講演会
• [Presentation] 種々の基板上に作製したブラウンミラライト型SrCoO2.5エピタキシャル薄膜の熱電能 (2019)
  • Author(s): 楊 倩，Hai Jun Cho，Joonhyuk Lee, 馮 斌, 幾原雄一, Hyoungjeen Jeen，太田裕道
  • Organizer: 2019年 第80回応用物理学会秋季学術講演会
• [Presentation] Investigation of transport property reductions in epitaxial La-doped BaSnO3 films (2019)
  • Author(s): Hai Jun Cho, Bin Feng, Takaki Onozato, Mian Wei, Anup V. Sanchela, Yuichi Ikuhara, Hiromichi Ohta
  • Organizer: 2019年 第80回応用物理学会秋季学術講演会
• [Presentation] 3000 S cm-1を超える高導電性深紫外透明酸化物半導体LaドープSrSnO3 (2019)
  • Author(s): 魏 冕，Anup Sanchela，馮 斌, 幾原雄一, Hai Jun Cho, 太田裕道
  • Organizer: 2019年 第80回応用物理学会秋季学術講演会
• [Presentation] アモルファスWOx（2.5 < x < 3）薄膜の光・電子・熱輸送 (2019)
  • Author(s): キム ゴウン，ジョ ヘジュン，Yu-Miin Sheu，太田裕道
  • Organizer: 2019年 第80回応用物理学会秋季学術講演会
• [Presentation] 酸素欠損WOx（2.83 < x < 3）エピタキシャル薄膜の電子・熱輸送特性 (2019)
  • Author(s): キム ゴウン，ジョ ヘジュン，馮斌，幾原雄一，太田裕道
  • Organizer: 2019年 第80回応用物理学会秋季学術講演会
• [Presentation] High and Low Thermal Conductivity Phase Boundary in SrTiO3-SrNbO3 Solid-Solution System (2019)
  • Author(s): Yuqiao Zhang, Hai Jun Cho, Kenyu Sugo, Masashi Mikami, Sungmin Woo, Myung-Chul Jung, Woosuck Shin, Woo Seok Choi, Myung Joon Han, Hiromichi Ohta
  • Organizer: 2019年 第80回応用物理学会秋季学術講演会
• [Presentation] Sr1-xLaxTiO3全率固溶体エピタキシャル薄膜の熱電特性 (2019)
  • Author(s): 須郷堅雄，張 雨橋，ジョヘジュン，太田裕道
  • Organizer: 2019年 第80回応用物理学会秋季学術講演会
• [Presentation] 層状酸化物エピタキシャル薄膜の熱伝導率異方性 (2019)
  • Author(s): 高嶋佑伍，小野里尚記, ジョヘジュン，太田裕道
  • Organizer: 2019年 第80回応用物理学会秋季学術講演会
• [Presentation] 自然超格子酸化物InGaO3(ZnO)mの異方的熱輸送 (2019)
  • Author(s): 呉 宇璋，ジョヘジュン，馮 斌，三上祐史，申ウソク，幾原雄一，齊藤圭司，太田裕道
  • Organizer: 2019年 第80回応用物理学会秋季学術講演会
• [Presentation] Electron and heat transport properties of La-doped BaSnO3 epitaxial films (2019)
  • Author(s): Hai Jun Cho, Bin Feng, Takaki Onozato, Mian Wei, Anup V. Sanchela, Yuichi Ikuhara, Hiromichi Ohta
  • Organizer: 26th International Workshop on Oxide Electronics (iWOE26)
  • Int'l Joint Research
• [Presentation] Anomalous Thermopower Behaviour of Brownmillerite SrCoO2.5 Epitaxial Films (2019)
  • Author(s): Qian Yang, Hai Jun Cho, Hyoungjeen Jeen, Hiromichi Ohta
  • Organizer: 26th International Workshop on Oxide Electronics (iWOE26)
  • Int'l Joint Research
• [Presentation] Systematic Clarification of Electron and Heat Transports in Oxygen Deficient WOx - Comparison between Amorphous Films and Epitaxial Films - (2019)
  • Author(s): Gowoon Kim, Hai Jun Cho, Bin Feng, Yuichi Ikuhara, Hiromichi Ohta
  • Organizer: TOEO-11
  • Int'l Joint Research
• [Presentation] New Deep-Ultraviolet Transparent Oxide Semiconductor, La-doped SrSnO3 (2019)
  • Author(s): Mian Wei, Anup V. Sanchela, Bin Feng, Yuichi Ikuhara, Hai Jun Cho, Hiromichi Ohta
  • Organizer: TOEO-11
  • Int'l Joint Research
• [Presentation] Transparent Oxide Semiconductor BaSnO3-SrSnO3 Solid-Solutions (2019)
  • Author(s): Hiromichi Ohta, Anup V. Sanchela
  • Organizer: TOEO-11, Nara, Japan, October 7-9, 2019. (Oral)
  • Int'l Joint Research
• [Presentation] 温度差を電気に変換する熱電材料としての層状コバルト酸化物 (2019)
  • Author(s): 高嶋佑伍, 小野里尚記, ジョヘジュン, 太田 裕道
  • Organizer: 第5回北海道大学部局横断シンポジウム
• [Presentation] SrCoOx酸素スポンジの高速電気化学反応の巨視的可視化 (2019)
  • Author(s): 楊 倩, Hai Jun Cho, Hyoungjeen Jeen, 太田裕道
  • Organizer: 令和元年日本セラミックス協会 東北北海道支部研究発表会
• [Presentation] ブラウンミラライト型SrCoO2.5薄膜の異常熱電能 (2019)
  • Author(s): 楊 倩, ジョ ヘジュン, Joonhyuk Lee, 馮 斌, 幾原雄一, Hyoungjeen Jeen, 太田裕道
  • Organizer: 令和元年日本セラミックス協会 東北北海道支部研究発表会
• [Presentation] 透明酸化物半導体BaSnO3-SrSnO3固溶体 (2019)
  • Author(s): 太田裕道, Anup V. Sanchela
  • Organizer: 令和元年日本セラミックス協会 東北北海道支部研究発表会, 新潟大学工学部, 新潟県新潟市, 2019年11月8日-9日（口頭発表）
• [Presentation] バンド絶縁体SrTiO3-モット絶縁体LaTiO3全率固溶体エピタキシャル薄膜の熱電特性 (2019)
  • Author(s): 須郷堅雄, 張 雨橋, ジョ・ヘジュン, 太田裕道
  • Organizer: 薄膜材料デバイス研究会 第16回研究集会 in 京都「新時代に向けた薄膜材料のデバイス技術」
• [Presentation] アモルファスSnO2透明薄膜トランジスタの熱電能電界変調 (2019)
  • Author(s): 梁 豆豆, 張 雨橋, ジョ・ヘジュン, 太田裕道
  • Organizer: 薄膜材料デバイス研究会 第16回研究集会 in 京都「新時代に向けた薄膜材料のデバイス技術」
• [Presentation] Flexible electrochromic transistor (2019)
  • Author(s): Takaki Onozato, Hai Jun Cho, Hiromichi Ohta
  • Organizer: The 9th Asia-Pacific Workshop on Widegap Semiconductors (APWS2019)
  • Int'l Joint Research
• [Presentation] (Li, La)TiO3対応粒界における原子構造とイオン伝導特性 (2019)
  • Author(s): 佐々野駿，石川亮，太田裕道，柴田直哉，幾原雄一
  • Organizer: 第60回 電池討論会
• [Presentation] High and Low Thermal Conductivity Phase Boundary in SrTiO3-SrNbO3 Solid-Solution System (2019)
  • Author(s): Yuqiao Zhang, Hai Jun Cho, Kenyu Sugo, Masashi Mikami, Sungmin Woo, Myung-Chul Jung, Woosuck Shin, Woo Seok Choi, Myung Joon Han, Hiromichi Ohta
  • Organizer: 2019 MRS Fall Meeting & Exhibit, Boston
  • Int'l Joint Research
• [Presentation] Electrical, optical and thermal transport properties of oxygen deficient amorphous WOx (2.5 < x < 3) films (2019)
  • Author(s): Gowoon Kim, Hai Jun Cho, Yu-Miin Sheu, Hiromichi Ohta
  • Organizer: 2019 MRS Fall Meeting & Exhibit
  • Int'l Joint Research
• [Presentation] Electric field thermopower modulation analyses of high mobility transparent amorphous SnO2 thin film transistor (2019)
  • Author(s): Dou-dou Liang, Yu-qiao Zhang, Hai Jun Cho, Hiromichi Ohta
  • Organizer: The 20th RIES-HOKUDAI International Symposium
  • Int'l Joint Research
• [Presentation] Systematic investigation of thermoelectric properties in Sr1-xLaxTiO3 solid-solutions (2019)
  • Author(s): Kenyu Sugo, Yuqiao Zhang, Hai Jun Cho, Hiromichi Ohta
  • Organizer: The 20th RIES-HOKUDAI International Symposium
  • Int'l Joint Research
• [Presentation] Fabrication and thermopower modulation of thin film transistor using deep-ultraviolet transparent oxide semiconductor as active layer (2019)
  • Author(s): Gong Lizhikun, Dou-dou Liang, Mian Wei, Hai Jun Cho, Hiromichi Ohta
  • Organizer: The 20th RIES-HOKUDAI International Symposium
  • Int'l Joint Research
• [Presentation] Epitaxial film growth of a deep-ultraviolet transparent oxide semiconductor, La-doped SrSnO3 (2019)
  • Author(s): Mian Wei, Anup V. Sanchela, Bin Feng, Yuichi Ikuhara, Hai Jun Cho, Hiromichi Ohta
  • Organizer: The 20th RIES-HOKUDAI International Symposium
  • Int'l Joint Research
• [Presentation] Macroscopic visualization of fast electrochemical reaction of SrCoOx oxygen sponge (2019)
  • Author(s): Qian Yang, Hai Jun Cho, Hyoungjeen Jeen, Hiromichi Ohta
  • Organizer: The 20th RIES-HOKUDAI International Symposium
  • Int'l Joint Research
• [Presentation] Effect of heat treating on electronic and structural properties of lightly doped epitaxial LaxBa1-xSnO3 films (2019)
  • Author(s): Takashi Fujimoto, Hai Jun Cho, Hiromichi Ohta
  • Organizer: The 20th RIES-HOKUDAI International Symposium
  • Int'l Joint Research
• [Presentation] Thermal conductivity of layered cobalt oxide epitaxial films with different crystallographic orientation (2019)
  • Author(s): Yugo Takashima, Takaki Onozato, Hai Jun Cho, Hiromichi Ohta
  • Organizer: The 20th RIES-HOKUDAI International Symposium
  • Int'l Joint Research
• [Presentation] Thermal conductivity of InGaO3(ZnO)m (m = integer) natural superlattice (2019)
  • Author(s): Yuzhang Wu, Hai Jun Cho, Bin Feng, Masashi Mikami, Woosuck Shin, Yuichi Ikuhara, Keiji Saito, Hiromichi Ohta
  • Organizer: The 20th RIES-HOKUDAI International Symposium
  • Int'l Joint Research
• [Presentation] Electric field thermopower modulation analyses of high mobility transparent amorphous SnO2 thin film transistor (2019)
  • Author(s): Dou-dou Liang, Yu-qiao Zhang, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 2019 International Symposium of Research Institute for Electronic Science (RIES), Hokkaido University & Center for Emergent Functional Matter Science (CEFMS)
  • Int'l Joint Research
• [Presentation] Systematic investigation of thermoelectric properties in Sr1-xLaxTiO3 solid-solutions (2019)
  • Author(s): Kenyu Sugo, Yuqiao Zhang, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 2019 International Symposium of Research Institute for Electronic Science (RIES), Hokkaido University & Center for Emergent Functional Matter Science (CEFMS)
  • Int'l Joint Research
• [Presentation] Fabrication and thermopower modulation of thin film transistor using deep-ultraviolet transparent oxide semiconductor as active layer (2019)
  • Author(s): Lizhikun Gong, Dou-dou Liang, Mian Wei, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 2019 International Symposium of Research Institute for Electronic Science (RIES), Hokkaido University & Center for Emergent Functional Matter Science (CEFMS)
  • Int'l Joint Research
• [Presentation] Epitaxial film growth of a deep-ultraviolet transparent oxide semiconductor, La-doped SrSnO3 (2019)
  • Author(s): Mian Wei, Anup V. Sanchela, Bin Feng, Yuichi Ikuhara, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 2019 International Symposium of Research Institute for Electronic Science (RIES), Hokkaido University & Center for Emergent Functional Matter Science (CEFMS)
  • Int'l Joint Research
• [Presentation] Macroscopic visualization of fast electrochemical reaction of SrCoOx oxygen sponge (2019)
  • Author(s): Qian Yang, Hai Jun Cho, Hyoungjeen Jeen, Hiromichi Ohta
  • Organizer: 2019 International Symposium of Research Institute for Electronic Science (RIES), Hokkaido University & Center for Emergent Functional Matter Science (CEFMS)
  • Int'l Joint Research
• [Presentation] Effect of heat treating on electronic and structural properties of lightly doped epitaxial LaxBa1-xSnO3 films (2019)
  • Author(s): Takashi Fujimoto, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 2019 International Symposium of Research Institute for Electronic Science (RIES), Hokkaido University & Center for Emergent Functional Matter Science (CEFMS)
  • Int'l Joint Research
• [Presentation] Thermal conductivity of layered cobalt oxide epitaxial films with different crystallographic orientation (2019)
  • Author(s): Yugo Takashima, Takaki Onozato, Hai Jun Cho, Hiromichi Ohta
  • Organizer: 2019 International Symposium of Research Institute for Electronic Science (RIES), Hokkaido University & Center for Emergent Functional Matter Science (CEFMS)
  • Int'l Joint Research
• [Presentation] Thermal conductivity of InGaO3(ZnO)m (m = integer) natural superlattice (2019)
  • Author(s): Yuzhang Wu, Hai Jun Cho, Bin Feng, Masashi Mikami, Woosuck Shin, Yuichi Ikuhara, Keiji Saito, Hiromichi Ohta
  • Organizer: 2019 International Symposium of Research Institute for Electronic Science (RIES), Hokkaido University & Center for Emergent Functional Matter Science (CEFMS)
  • Int'l Joint Research
• [Presentation] Fabrication of electrochromic transistor on flexible substrate (2019)
  • Author(s): Takaki Onozato, Hai Jun Cho, Hiromichi Ohta
  • Organizer: Materials Research Meeting 2019
  • Int'l Joint Research
• [Presentation] High electrical conductivity exceeding ~3000 S cm-1 of a transparent oxide semiconductor, La-doped SrSnO3 (2019)
  • Author(s): Mian Wei, Anup V. Sanchela, Hai Jun Cho, Hiromichi Ohta
  • Organizer: Materials Research Meeting 2019
  • Int'l Joint Research
• [Presentation] Gate-tuned Thermoelectric Performances in Aligned Conducting Polymers (2019)
  • Author(s): Katsuya Watanabe, Kaito Kanahashi, Naoya Takekoshi, Hisaaki Tanaka, Hiroshi Ito, Hiromichi Ohta, Taishi Takenobu
  • Organizer: Materials Research Meeting 2019
  • Int'l Joint Research
• [Presentation] Characterization of thermal conductivity tensors using time-domain thermoreflectance (2019)
  • Author(s): H.J. Cho, G. Kim, T. Onozato, H. Jeen, H. Ohta
  • Organizer: The 3rd Workshop on Functional Materials Science
  • Int'l Joint Research
• [Presentation] Electric field thermopower modulation of high-mobility SnO2 transparent thin film transistor (2019)
  • Author(s): Doudou Liang, Hai Jun Cho, Hiromichi Ohta
  • Organizer: The 3rd Workshop on Functional Materials Science
  • Int'l Joint Research
• [Presentation] Fabrication and characterization of deep-ultraviolet transparent oxide semiconductor thin film transistors (2019)
  • Author(s): Lizhikun Gong, Dou-dou Liang, Mian Wei, Hai Jun Cho, Hiromichi Ohta
  • Organizer: The 3rd Workshop on Functional Materials Science
  • Int'l Joint Research
• [Presentation] Systematic Clarification of Electron and Heat Transports in Oxygen Deficient WOx (2019)
  • Author(s): G. Kim, H. J. Cho, B. Feng, Y. Ikuhara, H. Ohta
  • Organizer: The 3rd Workshop on Functional Materials Science
  • Int'l Joint Research
• [Presentation] Investigation of transport property reductions in epitaxial La-doped BaSnO3 films (2019)
  • Author(s): Hai Jun Cho, Bin Feng, Takaki Onozato, Mian Wei, Anup V. Sanchela, Yuichi Ikuhara, Hiromichi Ohta
  • Organizer: The 3rd Workshop on Functional Materials Science
  • Int'l Joint Research
• [Presentation] Systematic investigation of thermoelectric properties in Sr1-xLaxTiO3 solid-solution system (2019)
  • Author(s): Kenyu Sugo, Yuqiao Zhang, Hai Jun Cho, Hiromichi Ohta
  • Organizer: The 3rd Workshop on Functional Materials Science
  • Int'l Joint Research
• [Presentation] Thermopower detection of electronic structure modulation of SrCoO2.5 film on lattice mismatched substrates (2019)
  • Author(s): Qian Yang, Joonhyuk Lee, Bin Feng, Yuichi Ikuhara, Gowoon Kim, Hai Jun Cho, Hyoungjeen Jeen, Hiromichi Ohta
  • Organizer: The 3rd Workshop on Functional Materials Science
  • Int'l Joint Research
• [Presentation] A flexible electrochromic transistor under mechanical fatigue (2019)
  • Author(s): Takaki Onozato, Hai Jun Cho, Hiromichi Ohta
  • Organizer: The 3rd Workshop on Functional Materials Science, Sapporo, Japan, December 18th-20th, 2019.
  • Int'l Joint Research
• [Presentation] Anisotropy of Thermal Conductivity for Epitaxial Films of Layered Cobalt Oxides, AxCoO2 (A = Li, Na, Ca, and Sr) (2019)
  • Author(s): Y. Takashima, T. Onazato, Y. Nezu, H.J. Cho, H. Ohta
  • Organizer: The 3rd Workshop on Functional Materials Science
  • Int'l Joint Research
• [Presentation] Zero contribution of conduction electrons in the thermal conductivity of a metallic conductor (2019)
  • Author(s): Y. Zhang, H.J. Cho, K. Sugo, M. Mikami, S. Woo, M.-C. Jung, Y.H. Zhuang, Y-M. Sheu, W. Shin, W.S. Choi, M.J. Han, H. Ohta
  • Organizer: The 3rd Workshop on Functional Materials Science
  • Int'l Joint Research
• [Presentation] Phonon propagation competition across natural superlattice InGaO3(ZnO)m (2019)
  • Author(s): Y. Wu, H.J. Cho, B. Feng, M. Mikami, W. Shin, Y. Ikuhara, K. Saito, H. Ohta
  • Organizer: The 3rd Workshop on Functional Materials Science
  • Int'l Joint Research
• [Presentation] New Deep-Ultraviolet Transparent Oxide Semiconductor, La-doped SrSnO3 (2019)
  • Author(s): Mian Wei, Anup V. Sanchela, Bin Feng, Yuichi Ikuhara, Hai Jun Cho, Hiromichi Ohta
  • Organizer: The 3rd Workshop on Functional Materials Science
  • Int'l Joint Research
• [Presentation] Structure-function relationship in the A-site orderded perovskite CaCu3Ru4O12 (2019)
  • Author(s): I. Terasaki
  • Organizer: Aalto Symposium on New Functional Materials, Otaniemi, 6-7 June 2019
  • Int'l Joint Research / Invited
• [Presentation] Structure-function relationship in the A-site orderded perovskite CaCu3Ru4O12 (2019)
  • Author(s): I. Terasaki
  • Organizer: NU-UoE JointDegree Workshop, Nagoya University, 1-3 July 2019
  • Int'l Joint Research / Invited
• [Presentation] Development of High Quality Na0.5CoO2 Thick Film for a Planar-Shape Thermoelectric Device (2019)
  • Author(s): A. Tsuruta, M. Tanaka, M. Mikami, Y. Kinemuchi, W. Shin, Y. Masuda, I. Terasaki
  • Organizer: MRS 2019 Fall Meeting, Boston, December 1-6, 2019
  • Int'l Joint Research
• [Presentation] 廃熱から電気を生み出すセラミックスの発見 (2019)
  • Author(s): 寺崎一郎
  • Organizer: 村田学術財団授賞式記念講演, 京都, 2019年7月19日
  • Invited
• [Presentation] 日本熱電学会チュートリアル講演 (2019)
  • Author(s): 寺崎一郎
  • Organizer: 日本熱電学会, 名古屋工業大学, 2019年9月3－5日
  • Invited
• [Presentation] 日本熱電学会学術賞受賞講演 (2019)
  • Author(s): 寺崎一郎
  • Organizer: 日本熱電学会, 名古屋工業大学, 2019年9月3－5日
  • Invited
• [Presentation] Ca2RuO4における直流電下熱拡散率測定II (2019)
  • Author(s): 川崎修史, 中村文彦, 中埜彰俊, 谷口博基, 寺崎一郎
  • Organizer: 日本物理学会 2019年秋季大会 岐阜大学 2019年9月10～13日
• [Presentation] Ca2RuO4の交流電流における非線形伝導 (2019)
  • Author(s): 佐野五十鈴, 中村文彦, 中埜彰俊, 谷口博基, 寺崎一郎
  • Organizer: 日本物理学会 2019年秋季大会 岐阜大学 2019年9月10～13日
• [Presentation] 励起子絶縁体候補物質Ta2NiSe5における非線形伝導現象の観測 (2019)
  • Author(s): 中埜彰俊, 丸岡うらら, 谷口博基, 寺崎一郎
  • Organizer: 日本物理学会 2019年秋季大会 岐阜大学 2019年9月10～13日
• [Presentation] 室温強磁性酸化物Sr3.1Y0.9Co4O10.5の元素置換による磁気転移制御 (2019)
  • Author(s): 川崎修史, 鶴田彰宏, 三上祐史, 杵鞭義明, 増田佳丈, 藤田麻哉, 寺崎一郎
  • Organizer: 第80回応用物理学会秋季学術講演会, 北海道大学, 2019年9月18～21日
• [Presentation] スクリーン印刷で作製したNa0.5CoO2厚膜の熱電変換特性 (2019)
  • Author(s): 鶴田彰宏, 田中未紀, 三上祐史, 杵鞭義明, 申ウソク, 増田佳丈, 寺崎一郎
  • Organizer: 第80回応用物理学会秋季学術講演会, 北海道大学, 2019年9月18～21日
• [Presentation] 低エネルギー逆光電子分光によるTa2NiSe5の伝導帯の直接観測 (2019)
  • Author(s): 川村啓太, 佐藤晴輝, 折尾響, 杉本高大, 太田幸則, 大槻太毅, 吉田鉄平, 丸岡うらら, 中埜彰俊, 寺崎一郎, 吉田弘幸
  • Organizer: 日本物理学会 2020年秋季大会 オンライン開催 2019年9月8～11日
• [Presentation] Weak and strong ETH from the clustering property (2019)
  • Author(s): K. Saito
  • Organizer: Thermlization, many body localization and hydrodynamics, ICTS, Bangalore, India (Nov.11-29 2019)
  • Int'l Joint Research / Invited
• [Book] Thermoelectric Micro/Nano Generators, Volume 1: Fundamental Physics, Materials and Measurements (2023)
  • Author(s): I. Terasaki
  • Total Pages: 23
  • Publisher: John Wiley & Sons
  • ISBN: 9781789451443
• [Book] 第11 章 酸化物エレクトロクロミック材料を用いたメモリデバイスの開発「エレクトロクロミックデバイスの開発最前線」樋口昌芳 監修 (2019)
  • Author(s): 太田裕道, 小野里尚記
  • Total Pages: 216
  • Publisher: シーエムシー出版
  • ISBN: 9784781314235
• [Book] Thermoelectric Thin Films: Materials and Devices (2019)
  • Author(s): Hiromichi Ohta
  • Total Pages: 211
  • Publisher: Springer
• [Book] 2D Nanomaterials for Energy Applications (1st Edition) (2019)
  • Author(s): Yu-qiao Zhang and Hiromichi Ohta
  • Total Pages: 352
  • Publisher: Elsevier
• [Remarks] 北海道大学 電子科学研究所 太田裕道研究室
  • URL: https://functfilm.es.hokudai.ac.jp/
• [Remarks] 機能性物質物性研究室（V研究室）
  • URL: http://vlab-nu.jp/member/terasaki.html
• [Remarks] Keiji Saito group
  • URL: https://sites.google.com/view/keijisaito-group
• [Remarks] 機能性物質物性研究室（V研究室）
  • URL: http://www.vlab-nu.jp/index.html
• [Remarks] Keiji Saito group
  • URL: http://saito.scphys.kyoto-u.ac.jp/
• [Remarks] 情報記憶素子の仕組みをのぞきみた！
  • URL: https://www.hokudai.ac.jp/news/2019/11/post-587.html
• [Patent(Industrial Property Rights)] 熱トランジスタ (2024)
  • Inventor(s): 太田裕道, 曲 勇作, ジョンアロン, 卞 志平, 吉村充生
  • Industrial Property Rights Holder: 国立大学法人 北海道大学
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2024-018066
  • Filing Date: 2024
• [Patent(Industrial Property Rights)] 薄膜トランジスタ (2023)
  • Inventor(s): 太田裕道, 曲 勇作, ゲディア プラシャント ラマニクラル
  • Industrial Property Rights Holder: 国立大学法人 北海道大学
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2023-185660
  • Filing Date: 2023
• [Patent(Industrial Property Rights)] 熱トランジスタ (2021)
  • Inventor(s): 太田裕道, 楊 倩, ジョ ヘジュン
  • Industrial Property Rights Holder: 国立大学法人 北海道大学
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2021-164181
  • Filing Date: 2021
• [Patent(Industrial Property Rights)] Electrochromic Transistor, Electronic Curtain, Information Display/Storage Device, and Anti-Glare Mirror (2019)
  • Inventor(s): Hiromichi Ohta, Takaki Onozato
  • Industrial Property Rights Holder: Hokkaido University
  • Industrial Property Rights Type: 特許
  • Filing Date: 2019
  • Acquisition Date: 2020
  • Overseas
• [Patent(Industrial Property Rights)] エレクトロクロミックトランジスタ、電子カーテン、情報表示記憶装置および防眩ミラー (2019)
  • Inventor(s): 太田裕道, 小野里尚記
  • Industrial Property Rights Holder: 北海道大学
  • Industrial Property Rights Type: 特許
  • Filing Date: 2019
  • Overseas
• [Funded Workshop] MINI WORKSHOP ON FUNCTIONAL MATERIALS SCIENCE (ORGANIZERS' MEETING) (2023)