Multidisciplinary analysis of oxide devices and interfaces using the international network of next generation synchrotron-radiation facilities

• Project/Area Number: 20KK0117
• Research Category: Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 29:Applied condensed matter physics and related fields
• Research Institution: Tohoku University
• Principal Investigator: 組頭 広志 東北大学, 多元物質科学研究所, 教授 (00345092)
• Co-Investigator(Kenkyū-buntansha): 相馬 清吾 東北大学, 材料科学高等研究所, 准教授 (20431489) ; 北村 未歩 国立研究開発法人量子科学技術研究開発機構, 次世代放射光施設整備開発センター, 主任研究員 (00783581)
• Project Period (FY): 2020-10-27 – 2026-03-31
• Project Status: Granted (Fiscal Year 2023)
• Budget Amount: ¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000); Fiscal Year 2025: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2024: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2023: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2022: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2021: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 放射光 / 量子ビーム / 角度分解光電子分光 / 軟X線分光 / 酸化物エレクトロニクス / 強相関電子系 / 酸化物ヘテロ構造 / 機能性ナノ構造

Outline of Research at the Start

本研究では、仏国パリ南大学および独国ブルツブルグ大学の2拠点を中心に、密接な国際連携を通して、欧州の次世代放射光群を舞台とした多元的な先端分光解析を行う。この国際共同研究スキームの下、酸化物デバイスで発現する新奇な量子状態を明らかにする。具体的には、世界をリードする当研究室の強相関酸化物デバイス・ナノ構造作製技術と欧州における最先端放射光解析技術とを組み合わせる事で、現状のボトルネックを解消し、未だ分からないことの多い酸化物デバイス内の量子（電荷・スピン・軌道）状態を可視化する。これにより、先端計測に基づいた酸化物デバイス開発を行う。

Outline of Annual Research Achievements

本国際共同研究の目的は、海外の次世代高輝度放射光施設の先端解析技術と日本側の酸化物デバイス作製技術とを組み合わせ、酸化物デバイス・ナノ構造研究を国際共同研究の下に加速させることである。具体的には、国内の放射光施設では観測することの難しい、酸化物デバイス界面数nmの領域で発現する特異な量子（電荷・スピン・軌道）状態をそれぞれの自由度に分けて可視化し、その知見に基づいた機能設計を行う。これにより、現状のボトルネックを解消し、明確な設計指針の元に酸化物デバイス開発を進める。さらに、本研究を通した欧州の放射光施設での研究交流を通じて、次世代光源である東北放射光への最先端放射光解析技術の導入を図る。
本年度は、ようやく新型コロナ禍による渡航制限がほぼ解除されたこともあり、パリ南大のグループとの下記に示す国際共同研究を遂行した。
１）SOLEIL放射光施設のカシオペアビームラインを用いて、パリ南大のグループと共同でVO2薄膜の偏光依存ARPES測定を行った。その結果、V-V二量化に伴った電子状態変化を観測することに成功した。
２）パリ南大のグループが来日し、KEK-PFのMUSASHIビームラインを用いて、酸素欠損VO2薄膜の金属絶縁体に関する研究を行った。
上記の国際共同実験において、対面で参加する人数を制限するため、一部のメンバーはこれまでに構築したリモート実験環境を駆使して参画した。さらに、オンライン会議を積極的に用いて、パリ南大学のグループと今後の研究計画に関する入念な打ち合わせを継続している。

Current Status of Research Progress

3: Progress in research has been slightly delayed.

Reason

今年度から新型コロナウイルス感染症による渡航制限、および共同研究先の研究活動制限が解除され、一部であるがようやく対面での国際共同研究が日仏両方で実施できた。これまで、パリ南大学およびブルツブルグ大学の研究者とはオンラインツールで打ち合わせ、およびそれぞれの機関・放射光施設に整備したネットワークによる遠隔実験により、国際共同研究自体をすすめてきたものの、実際の国際共同実験はやや遅れているのが現状である。特に、リモートでは実施困難な、スピン・軌道分解ARPES測定技術の開発、ナノARPES装置でのオペラント測定化のための電圧印加機構の設計・開発、およびオペラント測定用試料ホルダーへの酸化物デバイス構造の組み込みなどは、依然打ち合わせの段階である。しかしながら、十分に実験計画を練ってあり、今後は遅れを取り戻して研究遂行が出来る体制が構築されている。

Strategy for Future Research Activity

新型コロナウイルス感染症による渡航制限がほぼ解除されたため、これまでの研究計画を遂行していく。具体的には、独国ブルツブルグ大学での試料作製、および仏国パリ南大学のグループとのSOLEIL放射光施設を用いたナノARPES測定を行う。ナノARPES装置におけるオペラント測定化のための電圧印加機構については、2024年度の6月から9月の間にパリ南大学のAndres Santander-Syro教授を東北大学の客員教授として招聘予定であり、滞在中に設計・開発を進める予定である。
また、多くのメンバーが参画できるようにこれまで本研究で構築してきたリモート実験環境を有効に活かしつつ、欧州の放射光施設における国際共同研究を強力に推し進めていく。

Research Products

• [Int'l Joint Research] Paris-Saclay University/Synchrotron SOLEIL(フランス)
• [Int'l Joint Research] PAris-Saclay University/Synchrotron SOLEIL(フランス)
• [Int'l Joint Research] Paris-Saclay University/Synchrotron SOLEIL(フランス)
• [Int'l Joint Research] Paris-Saclay University(フランス)
• [Journal Article] Temperature-induced structural and electronic phase transitions in λ-phase Ti3O5 (2024)
  • Author(s): Yoshimatsu K.、Nakao H.、Kumigashira H.
  • Journal Title: Physical Review Materials Volume: 8 Issue: 3 Pages: 035002-035002
  • DOI: 10.1103/physrevmaterials.8.035002
  • Peer Reviewed
• [Journal Article] Peculiar magnetotransport properties in epitaxially stabilized orthorhombic Ru3+ perovskite LaRuO3 and NdRuO3 (2024)
  • Author(s): Zhang Lingfei、Fujita Takahiro C.、Masutake Yuuki、Kawamura Minoru、Arima Taka-hisa、Kumigashira Hiroshi、Tokunaga Masashi、Kawasaki Masashi
  • Journal Title: Communications Materials Volume: 5 Issue: 1
  • DOI: 10.1038/s43246-024-00470-y
  • Peer Reviewed / Open Access
• [Journal Article] Unveiling the orbital-selective electronic band reconstruction through the structural phase transition in TaTe2 (2024)
  • Author(s): Mitsuishi Natsuki、Sugita Yusuke、Akiba Tomoki、Takahashi Yuki、Sakano Masato、Horiba Koji、Kumigashira Hiroshi、Takahashi Hidefumi、Ishiwata Shintaro、Motome Yukitoshi、Ishizaka Kyoko
  • Journal Title: Physical Review Research Volume: 6 Issue: 1 Pages: 013155-013155
  • DOI: 10.1103/physrevresearch.6.013155
  • Peer Reviewed / Open Access
• [Journal Article] Electronic Properties of Chiral IrGe4 Studied by Angle Resolved Photoemission Spectroscopy and Band Structure Calculation (2024)
  • Author(s): Hayashi Genki、Shimaiwa Taiki、Okawa Mario、Nakamura Naoki、Higashinaka Ryuji、Matsuda Tatsuma D.、Aoki Yuji、Kitamura Miho、Shiga Daisuke、Kumigashira Hiroshi、Kopciuszynski Marek、Barinov Alexey、Saini Naurang. L.、Mizokawa Takashi
  • Journal Title: Journal of the Physical Society of Japan Volume: 93 Issue: 1 Pages: 1-6
  • DOI: 10.7566/jpsj.93.014702
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Quantization condition of strongly correlated electrons in oxide nanostructures (2023)
  • Author(s): Kanda Tatsuhiko、Shiga Daisuke、Wada Asato、Hayasaka Ryotaro、Masutake Yuuki、Hasegawa Naoto、Kitamura Miho、Yoshimatsu Kohei、Kumigashira Hiroshi
  • Journal Title: Communications Materials Volume: 4 Issue: 1 Pages: 27-27
  • DOI: 10.1038/s43246-023-00354-7
  • Peer Reviewed / Open Access
• [Journal Article] Electronic phase diagram of Cr-doped VO2 epitaxial films studied by in situ photoemission spectroscopy (2023)
  • Author(s): Shiga D.、Cheng X.、Kim T. T.、Kanda T.、Hasegawa N.、Kitamura M.、Yoshimatsu K.、Kumigashira H.
  • Journal Title: Physical Review B Volume: 108 Issue: 4 Pages: 1-9
  • DOI: 10.1103/physrevb.108.045112
  • Peer Reviewed
• [Journal Article] Thickness-dependent magnetotransport properties of rocksalt NdO epitaxial thin films: observation of a ferromagnetic phase far above the Curie temperature (2023)
  • Author(s): Saito Daichi、Oka Daichi、Kaminaga Kenichi、Kitamura Miho、Shiga Daisuke、Kumigashira Hiroshi、Fukumura Tomoteru
  • Journal Title: Journal of Materials Chemistry C Volume: 11 Issue: 36 Pages: 12400-12405
  • DOI: 10.1039/d3tc02478d
  • Peer Reviewed
• [Journal Article] Quantitative measurement of structural fluctuation at LaNiO3/LaAlO3 interfaces (2023)
  • Author(s): Nagai Kazuki、Anada Masato、Kowa Kazuhiro、Kitamura Miho、Kumigashira Hiroshi、Tajiri Hiroo、Wakabayashi Yusuke
  • Journal Title: Physical Review Materials Volume: 7 Issue: 4 Pages: 043604-043604
  • DOI: 10.1103/physrevmaterials.7.043604
  • Peer Reviewed
• [Journal Article] Novel supercell compounds of layered Bi-Rh-O with p-type metallic conduction materialized as a thin film form (2023)
  • Author(s): Ohno M.、Fujita T. C.、Masutake Y.、Kumigashira H.、Kawasaki M.
  • Journal Title: APL Materials Volume: 11 Issue: 5 Pages: 051107-051107
  • DOI: 10.1063/5.0147646
  • Peer Reviewed / Open Access
• [Journal Article] Oxygen on-site Coulomb energy in Pr1.3－xLa0.7CexCuO4 and Bi2Sr2CaCu2O8+δ and its relation with Heisenberg exchange (2023)
  • Author(s): Chainani A.、Horio M.、Cheng C.-M.、Malterre D.、Sheshadri K.、Kobayashi M.、Horiba K.、Kumigashira H.、Mizokawa T.、Oura M.、Taguchi M.、Mori Y.、Takahashi A.、Konno T.、Ohgi T.、Sato H.、Adachi T.、Koike Y.、Mochiku T.、Hirata K.、Shin S.、Wu M. K.、Fujimori A.
  • Journal Title: Physical Review B Volume: 107 Issue: 19 Pages: 195152-195152
  • DOI: 10.1103/physrevb.107.195152
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Large Perpendicular Magnetic Anisotropy Induced by an Intersite Charge Transfer in Strained EuVO₂H Films (2023)
  • Author(s): Namba M., Takatsu H., Mikita R.,Sijia Y., Murayama K., Li H.-B., Terada R., Tassel C., Ubukata H., Ochi M., Saez-Puche R., Latasa E. P., Ishimatsu N., Shiga D., Kumigashira H., Kinjo K., Kitagawa S., Ishida K., Terashima T., Fujita K., Mashiko T., Yanagisawa K., Kimoto K., Kageyama H.
  • Journal Title: Journal of the American Chemical Society Volume: 145 Issue: 40 Pages: 21807-21816
  • DOI: 10.1021/jacs.3c04521
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Inverse-Perovskite Ba3BO (B = Si and Ge) as a High Performance Environmentally Benign Thermoelectric Material with Low Lattice Thermal Conductivity (2023)
  • Author(s): He Xinyi、Kimura Shigeru、Katase Takayoshi、Tadano Terumasa、Matsuishi Satoru、Minohara Makoto、Hiramatsu Hidenori、Kumigashira Hiroshi、Hosono Hideo、Kamiya Toshio
  • Journal Title: Advanced Science Volume: 11 Issue: 10 Pages: 2307058-2307058
  • DOI: 10.1002/advs.202307058
  • Peer Reviewed / Open Access
• [Journal Article] Visualizing crystal twin boundaries of bismuth by high-spatial-resolution ARPES (2023)
  • Author(s): Moriya Ayumi、Nakayama Kosuke、Kawakami Tappei、Maeda Kensaku、Tokuyama Atsuya、Souma Seigo、Chen Chaoyu、Avila Jose、Asensio Maria Carmen、Kitamura Miho、Horiba Koji、Kumigashira Hiroshi、Takahashi Takashi、Fujiwara Kozo、Segawa Kouji、Sato Takafumi
  • Journal Title: Physical Review Research Volume: 5 Issue: 2 Pages: 023152-023152
  • DOI: 10.1103/physrevresearch.5.023152
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Surface-termination-dependent electronic states in kagome superconductors AV3Sb5 (A=K, Rb, Cs) studied by micro-ARPES (2023)
  • Author(s): Kato Takemi、Li Yongkai、Liu Min、Nakayama Kosuke、Wang Zhiwei、Souma Seigo、Kitamura Miho、Horiba Koji、Kumigashira Hiroshi、Takahashi Takashi、Yao Yugui、Sato Takafumi
  • Journal Title: Physical Review B Volume: 107 Issue: 24 Pages: 245143-245143
  • DOI: 10.1103/physrevb.107.245143
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Berry curvature contributions of kagome-lattice fragments in amorphous Fe-Sn thin films (2023)
  • Author(s): Fujiwara Kohei、Kato Yasuyuki、Abe Hitoshi、Noguchi Shun、Shiogai Junichi、Niwa Yasuhiro、Kumigashira Hiroshi、Motome Yukitoshi、Tsukazaki Atsushi
  • Journal Title: Nature Communications Volume: 14 Issue: 1
  • DOI: 10.1038/s41467-023-39112-1
  • Peer Reviewed / Open Access
• [Journal Article] Unusual surface states associated with PT-symmetry breaking and antiferromagnetic band folding in NdSb (2023)
  • Author(s): Honma Asuka、Takane Daichi、Souma Seigo、Wang Yongjian、Nakayama Kosuke、Kitamura Miho、Horiba Koji、Kumigashira Hiroshi、Takahashi Takashi、Ando Yoichi、Sato Takafumi
  • Journal Title: Physical Review B Volume: 108 Issue: 11 Pages: 115118-115118
  • DOI: 10.1103/physrevb.108.115118
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Switching of charge-density wave by carrier tuning in monolayer TiTe2 (2023)
  • Author(s): Yanagizawa Koki、Sugawara Katsuaki、Kawakami Tappei、Ando Ryuichi、Yaegashi Ken、Nakayama Kosuke、Souma Seigo、Tanaka Kiyohisa、Kitamura Miho、Horiba Koji、Kumigashira Hiroshi、Takahashi Takashi、Sato Takafumi
  • Journal Title: Physical Review Materials Volume: 7 Issue: 10 Pages: 104002-104002
  • DOI: 10.1103/physrevmaterials.7.104002
  • Peer Reviewed / Open Access
• [Journal Article] Antiferromagnetic topological insulator with selectively gapped Dirac cones (2023)
  • Author(s): Honma A.、Takane D.、Souma S.、Yamauchi K.、Wang Y.、Nakayama K.、Sugawara K.、Kitamura M.、Horiba K.、Kumigashira H.、Tanaka K.、Kim T. K.、Cacho C.、Oguchi T.、Takahashi T.、Ando Yoichi、Sato T.
  • Journal Title: Nature Communications Volume: 14 Issue: 1 Pages: 7396-7396
  • DOI: 10.1038/s41467-023-42782-6
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Two-dimensional heavy fermion in a monoatomic-layer Kondo lattice YbCu2 (2023)
  • Author(s): Nakamura Takuto、Sugihara Hiroki、Chen Yitong、Yukawa Ryu、Ohtsubo Yoshiyuki、Tanaka Kiyohisa、Kitamura Miho、Kumigashira Hiroshi、Kimura Shin-ichi
  • Journal Title: Nature Communications Volume: 14 Issue: 1
  • DOI: 10.1038/s41467-023-43662-9
  • Peer Reviewed / Open Access
• [Journal Article] Surface valence transition in SmS by alkali metal adsorption (2023)
  • Author(s): Nakamura Takuto、Nakaya Toru、Ohtsubo Yoshiyuki、Sugihara Hiroki、Tanaka Kiyohisa、Yukawa Ryu、Kitamura Miho、Kumigashira Hiroshi、Imura Keiichiro、Suzuki Hiroyuki S.、Sato Noriaki K.、Kimura Shin-ichi
  • Journal Title: Physical Review B Volume: 107 Issue: 4 Pages: 1-6
  • DOI: 10.1103/physrevb.107.l041102
  • Peer Reviewed
• [Journal Article] Half-Metallicity and Magnetic Anisotropy in Double-Perovskite GdBaCo2O6 Films Prepared via Topotactic Oxidation (2023)
  • Author(s): Katayama Tsukasa、Mo Shishin、Chikamatsu Akira、Kurauchi Yuji、Kumigashira Hiroshi、Hasegawa Tetsuya
  • Journal Title: Chemistry of Materials Volume: 35 Issue: 3 Pages: 1295-1300
  • DOI: 10.1021/acs.chemmater.2c03335
  • Peer Reviewed
• [Journal Article] Direct Imaging of Band Structure for Powdered Rhombohedral Boron Monosulfide by Microfocused ARPES (2023)
  • Author(s): Katsuaki Sugawara, Haruki Kusaka, Tappei Kawakami, Koki Yanagizawa, Asuka Honma, Seigo Souma, Kosuke Nakayama, Masashi Miyakawa, Takashi Taniguchi, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Takashi Takahashi, Shin-ichi Orimo, Masayuki Toyoda, Susumu Saito, Takahiro Kondo, and Takafumi Sato
  • Journal Title: Nano Letters Volume: 23 Issue: 5 Pages: 1673-1679
  • DOI: 10.1021/acs.nanolett.2c04048
  • Peer Reviewed / Open Access
• [Journal Article] Quantization condition of strongly correlated electrons in oxide nanostructures (2023)
  • Author(s): Tatsuhiko Kanda, Daisuke Shiga, Asato Wada, Ryotaro Hayasaka, Yuuki, Masutake, Naoto Hasegawa, Miho Kitamura, Kohei Yoshimatsu, and Hiroshi Kumigashira
  • Journal Title: Communications Materials Volume: in press
  • Peer Reviewed / Open Access
• [Journal Article] Electronic band structure of Ti2O3 thin films studied by angle-resolved photoemission spectroscopy (2022)
  • Author(s): Hasegawa Naoto、Yoshimatsu Kohei、Shiga Daisuke、Kanda Tatsuhiko、Miyazaki Satoru、Kitamura Miho、Horiba Koji、Kumigashira Hiroshi
  • Journal Title: Physical Review B Volume: 105 Issue: 23 Pages: 1-8
  • DOI: 10.1103/physrevb.105.235137
  • Peer Reviewed
• [Journal Article] Photoinduced transient states of antiferromagnetic orderings in La_1/3Sr_2/3FeO₃ and SrFeO_3-δ thin films observed through time-resolved resonant soft x-ray scattering (2022)
  • Author(s): Yamamoto Kohei、Tsuyama Tomoyuki、Ito Suguru、Takubo Kou、Matsuda Iwao、Pontius Niko、Schussler-Langeheine Christian、Minohara Makoto、Kumigashira Hiroshi、Yamasaki Yuichi、Nakao Hironori、Murakami Youichi、Katase Takayoshi、Kamiya Toshio、Wadati Hiroki
  • Journal Title: New Journal of Physics Volume: 24 Issue: 4 Pages: 043012-043012
  • DOI: 10.1088/1367-2630/ac5f31
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Design, Synthesis, and Optoelectronic Properties of the High-Purity Phase in Layered AETMN2 (AE = Sr, Ba; TM = Ti, Zr, Hf) Semiconductors (2022)
  • Author(s): Akihiro Shiraishi, Shigeru Kimura, Xinyi He, Naoto Watanabe, Takayoshi Katase, Keisuke Ide, Makoto Minohara, Kosuke Matsuzaki, Hidenori Hiramatsu, Hiroshi Kumigashira, Hideo Hosono, and Toshio Kamiya
  • Journal Title: Inorg. Chem. Volume: 61 Issue: 17 Pages: 6650-6659
  • DOI: 10.1021/acs.inorgchem.2c00604
  • Peer Reviewed
• [Journal Article] High-Mobility Metastable Rock-Salt Type (Sn,Ca)Se Thin Film Stabilized by Direct Epitaxial Growth on a YSZ (111) Single-Crystal Substrate (2022)
  • Author(s): Xinyi He, Jinshuai Chen, Takayoshi Katase, Makoto Minohara, Keisuke Ide, Hidenori Hiramatsu, Hiroshi Kumigashira, Hideo Hosono, and Toshio Kamiya
  • Journal Title: ACS Appl. Mater. Interfaces Volume: 14 Issue: 16 Pages: 18682-18689
  • DOI: 10.1021/acsami.2c01464
  • Peer Reviewed
• [Journal Article] Enhancement of transparency in epitaxially-grown p-type SnO films by surface-passivation treatment in a Na2S aqueous solution (2022)
  • Author(s): Uchida Suguri、Soma Takuto、Kitamura Miho、Kumigashira HIroshi、OHTOMO Akira
  • Journal Title: Japanese Journal of Applied Physics Volume: - Issue: 5 Pages: 050903-050903
  • DOI: 10.35848/1347-4065/ac56fa
  • Peer Reviewed / Open Access
• [Journal Article] Surface proton conduction below 100 °C of Ce0.80Sm0.20O2-δ thin film with oxygen vacancies (2022)
  • Author(s): G. Notake, D. Nishioka, H. Murasawa, M. Takayanagi, Y. Fukushima, H. Ito, T. Takada, D. Shiga, M. Kitamura, H. Kumigashira, and T. Higuchi
  • Journal Title: Jpn. J. Appl. Phys. Volume: 61 Issue: SD Pages: SD1017-SD1017
  • DOI: 10.35848/1347-4065/ac4feb
  • Peer Reviewed / Open Access
• [Journal Article] Development of magnetism in Fe-doped magnetic semiconductors: Resonant photoemission and x-ray magnetic circular dichroism studies of (Ga,Fe)As (2022)
  • Author(s): Takeda Takahito、Sakamoto Shoya、Anh Le Duc、Takeda Yukiharu、Fujimori Shin-ichi、Kitamura Miho、Horiba Koji、Kumigashira Hiroshi、Fujimori Atsushi、Tanaka Masaaki、Kobayashi Masaki
  • Journal Title: Physical Review B Volume: 105 Issue: 19
  • DOI: 10.1103/physrevb.105.195155
  • Peer Reviewed
• [Journal Article] Intervalence charge transfer and charge transport in the spinel ferrite ferromagnetic semiconductor Ru-doped CoFe2O4 (2022)
  • Author(s): Masaki Kobayashi, Munetoshi Seki, Masahiro Suzuki, Ryo Okano, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Atsushi Fujimori, Masaaki Tanaka, and Hitoshi Tabata
  • Journal Title: Phys. Rev. B Volume: 105 Issue: 20 Pages: 205103-205103
  • DOI: 10.1103/physrevb.105.205103
  • Peer Reviewed
• [Journal Article] Evidence of lattice deformation induced metal-insulator transition in Ti2O3 (2022)
  • Author(s): Yoshimatsu K.、Miyazaki S.、Hasegawa N.、Kumigashira H.
  • Journal Title: Physical Review B Volume: 106 Issue: 8
  • DOI: 10.1103/physrevb.106.l081110
  • Peer Reviewed
• [Journal Article] Anomalously large spin-dependent electron correlation in the nearly half-metallic ferromagnet CoS2 (2022)
  • Author(s): H. Fujiwara, K. Terashima, J. Otsuki, N. Takemori、H. O. Jeschke、T. Wakitai、Y. Yano、W. Hosoda、N. Kataoka、A. Teruya、M. Kakihana、M. Hedo、T. Nakama、Y. Onuki、K. Yaji、A. Harasawa、K. Kuroda、S. Shin、K. Horiba、H. Kumigashira、Y. Muraoka、T. Yokoya
  • Journal Title: Physical Review B Volume: 106 Issue: 8 Pages: 085114-085114
  • DOI: 10.1103/physrevb.106.085114
  • Peer Reviewed
• [Journal Article] Rocksalt CeO epitaxial thin film as a heavy-fermion system transiting from p-type metal to partially compensated n-type metal by 4f delocalization (2022)
  • Author(s): Abe Nobuto、Oka Daichi、Kaminaga Kenichi、Shiga Daisuke、Saito Daichi、Yamamoto Taku、Kimura Noriaki、Kumigashira Hiroshi、Fukumura Tomoteru
  • Journal Title: Physical Review B Volume: 106 Issue: 12 Pages: 125106-125106
  • DOI: 10.1103/physrevb.106.125106
  • Peer Reviewed
• [Journal Article] Polarity-dependent charge density wave in the kagome superconductor CsV3Sb5 (2022)
  • Author(s): Kato Takemi、Li Yongkai、Nakayama Kosuke、Wang Zhiwei、Souma Seigo、Kitamura Miho、Horiba Koji、Kumigashira Hiroshi、Takahashi Takashi、Sato Takafumi
  • Journal Title: Physical Review B Volume: 106 Issue: 12
  • DOI: 10.1103/physrevb.106.l121112
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Giant spin-to-charge conversion at an all-epitaxial single-crystal-oxide Rashba interface with a strongly correlated metal interlayer (2022)
  • Author(s): Kaneta-Takada Shingo、Kitamura Miho、Arai Shoma、Arai Takuma、Okano Ryo、Anh Le Duc、Endo Tatsuro、Horiba Koji、Kumigashira Hiroshi、Kobayashi Masaki、Seki Munetoshi、Tabata Hitoshi、Tanaka Masaaki、Ohya Shinobu
  • Journal Title: Nature Communications Volume: 13 Issue: 1 Pages: 1-8
  • DOI: 10.1038/s41467-022-33350-5
  • Peer Reviewed / Open Access
• [Journal Article] Fermiology and Origin of Tc Enhancement in a Kagome Superconductor Cs(V1－xNbx)3Sb5 (2022)
  • Author(s): Kato Takemi、Li Yongkai、Nakayama Kosuke、Wang Zhiwei、Souma Seigo、Matsui Fumihiko、Kitamura Miho、Horiba Koji、Kumigashira Hiroshi、Takahashi Takashi、Yao Yugui、Sato Takafumi
  • Journal Title: Physical Review Letters Volume: 129 Issue: 20 Pages: 206402-206402
  • DOI: 10.1103/physrevlett.129.206402
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Electronic structure reconstruction by trimer formation in CsW2O6 studied by x-ray photoelectron spectroscopy (2022)
  • Author(s): Nakamura R.、Takegami D.、Melendez-Sans A.、Tjeng L. H.、Okawa M.、Miyoshino T.、Saini N. L.、Kitamura M.、Shiga D.、Kumigashira H.、Yoshimura M.、Tsuei K.-D.、Okamoto Y.、Mizokawa T.
  • Journal Title: Physical Review B Volume: 106 Issue: 19
  • DOI: 10.1103/physrevb.106.195104
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Low-temperature-processable amorphous-oxide-semiconductor-based phosphors for durable light-emitting diodes (2022)
  • Author(s): Ide Keisuke、Watanabe Naoto、Katase Takayoshi、Sasase Masato、Kim Junghwan、Ueda Shigenori、Horiba Koji、Kumigashira Hiroshi、Hiramatsu Hidenori、Hosono Hideo、Kamiya Toshio
  • Journal Title: Applied Physics Letters Volume: 121 Issue: 19 Pages: 192108-192108
  • DOI: 10.1063/5.0115384
  • Peer Reviewed
• [Journal Article] Signature of topological band crossing in ferromagnetic Cr1/3NbSe2 epitaxial thin film (2022)
  • Author(s): Saika Bruno Kenichi、Hamao Satoshi、Majima Yuki、Huang Xiang、Matsuoka Hideki、Yoshida Satoshi、Kitamura Miho、Sakano Masato、Hatanaka Tatsuto、Nomoto Takuya、Hirayama Motoaki、Horiba Koji、Kumigashira Hiroshi、Arita Ryotaro、Iwasa Yoshihiro、Nakano Masaki、Ishizaka Kyoko
  • Journal Title: Physical Review Research Volume: 4 Issue: 4 Pages: 1-7
  • DOI: 10.1103/physrevresearch.4.l042021
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Fermiology of a topological line-nodal compound CaSb2 and its implication to superconductivity: Angle-resolved photoemission study (2022)
  • Author(s): Chuang Chien-Wen、Souma Seigo、Moriya Ayumi、（省略）、Kumigashira Hiroshi、Takahashi Takashi、Yonezawa Shingo、Paglione Johnpierre、Maeno Yoshiteru、Sato Takafumi
  • Journal Title: Physical Review Materials Volume: 6 Issue: 10 Pages: 104203-1
  • DOI: 10.1103/physrevmaterials.6.104203
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Rocksalt-type PrO epitaxial thin film as a weak ferromagnetic Kondo lattice (2022)
  • Author(s): Shimizu Hirokazu、Oka Daichi、Kaminaga Kenichi、Saito Daichi、Yamamoto Taku、Abe Nobuto、Kimura Noriaki、Shiga Daisuke、Kumigashira Hiroshi、Fukumura Tomoteru
  • Journal Title: Physical Review B Volume: 105 Issue: 1 Pages: 014442-014442
  • DOI: 10.1103/physrevb.105.014442
  • Peer Reviewed
• [Journal Article] Room-Temperature Preparation of Ta Ions-Containing Ionic Liquid and its Vapor Deposition toward Ta-Oxide Film Coating (2022)
  • Author(s): N. Hozuki, K. Kaminaga, S. Maruyama, D. Shiga, H. Kumigashira, H. Takato, M. Kondo, and Y. Matsumoto
  • Journal Title: J. Electrochem. Soc. Volume: 169 Issue: 1 Pages: 013504-013504
  • DOI: 10.1149/1945-7111/ac48c5
  • Peer Reviewed
• [Journal Article] Synthesis of high-entropy layered oxide epitaxial thin films: LiCr1/6Mn1/6Fe1/6Co1/6Ni1/6Cu1/6O2 (2022)
  • Author(s): Kaidong Wang, Kazunori Nishio, Koji Horiba, Miho Kitamura, Kurei Edamura, Daisuke Imazeki, Ryo Nakayama, Ryota Shimizu, Hiroshi Kumigashira, Taro Hitosugi
  • Journal Title: Crystal Growth Design Volume: 22 Issue: 2 Pages: 1116-1122
  • DOI: 10.1021/acs.cgd.1c01076
  • Peer Reviewed
• [Journal Article] Two-dimensional superconductivity in single-band correlated 2H-type NbO2 layers (2022)
  • Author(s): Soma Takuto、Yoshimatsu Kohei、Horiba Koji、Kumigashira Hiroshi、Ohtomo Akira
  • Journal Title: Physical Review B Volume: 105 Issue: 10 Pages: 104504-104504
  • DOI: 10.1103/physrevb.105.104504
  • Peer Reviewed
• [Journal Article] Crystal Structure and Electronic Property Modification of Ca2RuO4 thin Films via Fluorine Doping (2022)
  • Author(s): S. Fukuma, A. Chikamatsu, T. Katayama, T. Maruyama, K. Yanagisawa , K. Kimoto, M. Kitamura, K. Horiba, H. Kumigashira, Y. Hirose, and T. Hasegawa
  • Journal Title: Phys. Rev. Mater. Volume: 6 Issue: 3 Pages: 035002-035002
  • DOI: 10.1103/physrevmaterials.6.035002
  • Peer Reviewed
• [Journal Article] Development of a versatile micro-focused ARPES system with Kirkpatrick-Baez mirror optics (2022)
  • Author(s): M. Kitamura, S. Souma, A. Honma, D. Wakabayashi, H. Tanaka, A. Toyoshima, K. Amemiya, T. Kawakami, K. Sugawara, K. Nakayama, K. Yoshimatsu, H. Kumigashira, T. Sato, K. Horiba
  • Journal Title: Review of Scientific Instruments Volume: 93 Issue: 3 Pages: 033906-033906
  • DOI: 10.1063/5.0074393
  • Peer Reviewed
• [Journal Article] Resonant tunneling driven metal-insulator transition in double quantum-well structures of strongly correlated oxide (2021)
  • Author(s): Yukawa R.、Kobayashi M.、Kanda T.、Shiga D.、Yoshimatsu K.、Ishibashi S.、Minohara M.、Kitamura M.、Horiba K.、Santander-Syro A. F.、Kumigashira H.
  • Journal Title: Nature Communications Volume: 12 Issue: 1 Pages: 7070-7070
  • DOI: 10.1038/s41467-021-27327-z
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Electronic structure of SrTi1-xVxO3 films studied by in situ photoemission spectroscopy: Screening for a transparent electrode material (2021)
  • Author(s): Kanda Tatsuhiko、Shiga Daisuke、Yukawa Ryu、Hasegawa Naoto、Nguyen Duy Khanh、Cheng Xianglin、Tokunaga Ryosuke、Kitamura Miho、Horiba Koji、Yoshimatsu Kohei、Kumigashira Hiroshi
  • Journal Title: Physical Review B Volume: 104 Issue: 11 Pages: 115121-115121
  • DOI: 10.1103/physrevb.104.115121
  • Peer Reviewed
• [Journal Article] Imaging the itinerant-to-localized transmutation of electrons across the metal-to-insulator transition in V2O3 (2021)
  • Author(s): Thees M、Lee Min-Han、Bouwmeester R L、Rezende-Gonalves Pedro H.、David E、Zimmers A、Fortuna F、Frantzeskakis E、Vargas Nicolas M.、Kalcheim Y、Le Fevre P、Horiba K、Kumigashira H、Biermann S、Trastoy J、Rozenberg Marcelo J.、Schuller Ivan K.、Santander-Syro A F.
  • Journal Title: Science Advances Volume: 7 Issue: 45
  • DOI: 10.1126/sciadv.abj1164
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Large phonon drag thermopower boosted by massive electrons and phonon leaking in LaAlO3/LaNiO3/LaAlO3 heterostructure (2021)
  • Author(s): Masatoshi Kimura, Xinyi He, Takayoshi Katase, Terumasa Tadano, Jan M. Tomczak, Makoto Minohara, Ryotaro Aso, Hideto Yoshida, Keisuke Ide, Shigenori Ueda, Hidenori Hiramatsu, Hiroshi Kumigashira, Hideo Hosono, and Toshio Kamiya
  • Journal Title: Nano Lett. Volume: 21 Issue: 21 Pages: 9240-9246
  • DOI: 10.1021/acs.nanolett.1c03143
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Local polarization and valence distribution in LaNiO3/LaMnO3 heterostructures (2021)
  • Author(s): Anada Masato、Sakaguchi Satoshi、Nagai Kazuki、Kitamura Miho、Horiba Koji、Kumigashira Hiroshi、Wakabayashi Yusuke
  • Journal Title: Physical Review B Volume: 104 Issue: 8
  • DOI: 10.1103/physrevb.104.085111
  • Peer Reviewed
• [Journal Article] Epitaxial-Strain-Induced Spontaneous Magnetization in Polar Mn2Mo3O8 (2021)
  • Author(s): Mo Shishin、Katayama Tsukasa、Chikamatsu Akira、Kitamura Miho、Horiba Koji、Kumigashira Hiroshi、Hasegawa Tetsuya
  • Journal Title: Chemistry of Materials Volume: 33 Issue: 19 Pages: 7713-7718
  • DOI: 10.1021/acs.chemmater.1c01877
  • Peer Reviewed
• [Journal Article] Bipolar Semiconducting Properties in α-SnWO4 Based on the Characteristic Defect Structure (2021)
  • Author(s): Minohara Makoto、Dobashi Yuka、Kikuchi Naoto、Samizo Akane、Tsukuda Kouhei、Nishio Keishi、Mibu Ko、Kumigashira Hiroshi、Hase Izumi、Yoshida Yoshiyuki、Aiura Yoshihiro
  • Journal Title: Inorganic Chemistry Volume: 60 Issue: 11 Pages: 8035-8041
  • DOI: 10.1021/acs.inorgchem.1c00530
  • Peer Reviewed
• [Journal Article] Total reflection hard x-ray photoelectron spectroscopy: Applications to strongly correlated electron systems (2021)
  • Author(s): T. Mizutani, S. Tanaka, T. Saze, K. Fujii, H. Matsuoka, M. Nakano, H. Wadati, M. Kitamura, K. Horiba, Y. Iwasa, H. Kumigashira, M. Yoshiki, M. Taguchi
  • Journal Title: Physical Review B Volume: 103 Issue: 20 Pages: 205113-205113
  • DOI: 10.1103/physrevb.103.205113
  • Peer Reviewed
• [Journal Article] Electronic structure of 3°-twisted bilayer graphene on 4H-SiC(0001) (2021)
  • Author(s): Takushi Iimori, Anton Visikovskiy, Hitoshi Imamura, Toshio Miyamachi, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Kazuhiko Mase, Kan Nakatsuji, Satoru Tanaka, Fumio Komori
  • Journal Title: Physical Review Materials Volume: 5 Issue: 5
  • DOI: 10.1103/physrevmaterials.5.l051001
  • Peer Reviewed
• [Journal Article] Large magnetoresistance of a compensated metal Cu2Sb correlated with its Fermi surface topology (2021)
  • Author(s): Endo Mizuki、Kawasoko Hideyuki、Soma Seigo、Yamauchi Kunihiko、Kitamura Miho、Horiba Koji、Kumigashira Hiroshi、Kimura Noriaki、Oguchi Tamio、Sato Takafumi、Fukumura Tomoteru
  • Journal Title: Physical Review Materials Volume: 5 Issue: 10
  • DOI: 10.1103/physrevmaterials.5.105002
  • Peer Reviewed
• [Journal Article] Superconducting gap and pseudogap in the surface states of the iron-based superconductor PrFeAsO1－y studied by angle-resolved photoemission spectroscopy (2021)
  • Author(s): Hagiwara K.、Ishikado M.、Horio M.、Koshiishi K.、Nakata S.、Ideta S.、Tanaka K.、Horiba K.、Ono K.、Kumigashira H.、Yoshida T.、Ishida S.、Eisaki H.、Shamoto S.、Fujimori A.
  • Journal Title: Physical Review Research Volume: 3 Issue: 4
  • DOI: 10.1103/physrevresearch.3.043151
  • Peer Reviewed / Open Access
• [Journal Article] Dirac Semimetal Phase and Topological Phase Transition in XMg2Bi2 (X = Ba and Sr) (2021)
  • Author(s): Daichi Takane, Yuya Kubota, Kosuke Nakayama, Tappei Kawakami, Kunihiko Yamauchi, Seigo Souma, Takemi Kato, Katsuaki Sugawara, Shin-ichiro Ideta, Kiyohisa Tanaka, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Tamio Oguchi, Takashi Takahashi, Kouji Segawa, and Takafumi Sato
  • Journal Title: Sci. Rep. Volume: 11 Issue: 1 Pages: 21937-21937
  • DOI: 10.1038/s41598-021-01333-z
  • Peer Reviewed / Open Access
• [Journal Article] Direct Synthesis of Metastable λ-Phase Ti3O5 Films on LaAlO3 (110) Substrates at High Temperatures (2021)
  • Author(s): Yoshimatsu Kohei、Kumigashira Hiroshi
  • Journal Title: Crystal Growth & Design Volume: 22 Issue: 1 Pages: 703-710
  • DOI: 10.1021/acs.cgd.1c01214
  • Peer Reviewed
• [Journal Article] Investigation of the electronic states of A-site layer-ordered double perovskite YBaCo2Ox (x = 5.3 and 6) thin films by x-ray spectroscopy (2021)
  • Author(s): Chikamatsu Akira、Katayama Tsukasa、Maruyama Takahiro、Kitamura Miho、Horiba Koji、Kumigashira Hiroshi、Wadati Hiroki、Hasegawa Tetsuya
  • Journal Title: Applied Physics Letters Volume: 118 Issue: 1 Pages: 012401-012401
  • DOI: 10.1063/5.0031096
  • Peer Reviewed
• [Journal Article] Surface Electron-Ion Mixed Conduction of BaTiO3-δ Thin Film with Oxygen Vacancies (2021)
  • Author(s): Takada Tomoasa、Fujita Takeshi、Imagawa Takehiro、Yamamoto Emi、Kano Jun、Shiga Daisuke、Horiba Koji、Kumigashira Hiroshi、Higuchi Tohru
  • Journal Title: Journal of the Physical Society of Japan Volume: 90 Issue: 1 Pages: 014707-014707
  • DOI: 10.7566/jpsj.90.014707
  • NAID: 40022452842
  • Peer Reviewed
• [Journal Article] Transport properties and electronic structure of fluorine-doped SnO2 prepared by ultrasonic assisted mist deposition (2021)
  • Author(s): Sakai Enju、Tsutsumi Naoya、Horiba Koji、Kumigashira Hiroshi、Tsuji Yoshiko
  • Journal Title: Journal of Electron Spectroscopy and Related Phenomena Volume: 247 Pages: 147041-147041
  • DOI: 10.1016/j.elspec.2020.147041
  • Peer Reviewed
• [Journal Article] High-Quality Few-Layer Graphene on Single-Crystalline SiC thin Film Grown on Affordable Wafer for Device Applications (2021)
  • Author(s): Endoh Norifumi、Akiyama Shoji、Tashima Keiichiro、Suwa Kento、Kamogawa Takamasa、Kohama Roki、Funakubo Kazutoshi、Konishi Shigeru、Mogi Hiroshi、Kawahara Minoru、Kawai Makoto、Kubota Yoshihiro、Ohkochi Takuo、Kotsugi Masato、Horiba Koji、Kumigashira Hiroshi、Suemitsu Maki、Watanabe Issei、Fukidome Hirokazu
  • Journal Title: Nanomaterials Volume: 11 Issue: 2 Pages: 392-392
  • DOI: 10.3390/nano11020392
  • Peer Reviewed / Open Access
• [Journal Article] Thickness dependence of electronic structures in VO2 ultrathin films: Suppression of the cooperative Mott-Peierls transition (2020)
  • Author(s): Shiga D.、Yang B. E.、Hasegawa N.、Kanda T.、Tokunaga R.、Yoshimatsu K.、Yukawa R.、Kitamura M.、Horiba K.、Kumigashira H.
  • Journal Title: Physical Review B Volume: 102 Issue: 11 Pages: 115114-115114
  • DOI: 10.1103/physrevb.102.115114
  • Peer Reviewed
• [Journal Article] Metallic ground states of undoped Ti2O3 films induced by elongated c-axis lattice constant (2020)
  • Author(s): Yoshimatsu K.、Hasegawa N.、Nambu Y.、Ishii Y.、Wakabayashi Y.、Kumigashira H.
  • Journal Title: Scientific Reports Volume: 10 Issue: 1 Pages: 22109-22109
  • DOI: 10.1038/s41598-020-79182-5
  • Peer Reviewed / Open Access
• [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] Molecular beam epitaxy growth of the highly conductive oxide SrMoO3 (2020)
  • Author(s): H. Takatsu, N. Yamashina, D. Shiga, R. Yukawa, K. Horiba, H. Kumigashira, T. Terashima, H. Kageyama
  • Journal Title: J. Cryst. Growth Volume: in press Pages: 125685-125685
  • DOI: 10.1016/j.jcrysgro.2020.125685
  • Peer Reviewed
• [Journal Article] Influence of fluorination on electronic states and electron transport properties of Sr2IrO4 thin films (2020)
  • Author(s): Maruyama Takahiro、Chikamatsu Akira、Katayama Tsukasa、Kuramochi Kenta、Ogino Hiraku、Kitamura Miho、Horiba Koji、Kumigashira Hiroshi、Hasegawa Tetsuya
  • Journal Title: Journal of Materials Chemistry C Volume: 8 Issue: 24 Pages: 8268-8274
  • DOI: 10.1039/d0tc01734e
  • Peer Reviewed
• [Journal Article] Hard and soft x-ray photoemission spectroscopy study of the new Kondo system SmO thin film (2020)
  • Author(s): Sakamoto Shoya、Kaminaga Kenichi、Oka Daichi、Yukawa Ryu、Horio Masafumi、Yokoyama Yuichi、Yamamoto Kohei、Takubo Kou、Nonaka Yosuke、Koshiishi Keisuke、Kobayashi Masaki、Tanaka Arata、Yasui Akira、Ikenaga Eiji、Wadati Hiroki、Kumigashira Hiroshi、Fukumura Tomoteru、Fujimori Atsushi
  • Journal Title: Physical Review Materials Volume: 4 Issue: 9 Pages: 1-5
  • DOI: 10.1103/physrevmaterials.4.095001
  • Peer Reviewed
• [Journal Article] Polarity reversal of the charge carrier in tetragonal TiHx(x=1.6-2.0) at low temperatures (2020)
  • Author(s): Shimizu Ryota、Sasahara Yuki、Hamada Ikutaro、Oguchi Hiroyuki、Ogura Shohei、Shirasawa Tetsuroh、Kitamura Miho、Horiba Koji、Kumigashira Hiroshi、Orimo Shin-ichi、Fukutani Katsuyuki、Hitosugi Taro
  • Journal Title: Physical Review Research Volume: 2 Issue: 3 Pages: 0334671-9
  • DOI: 10.1103/physrevresearch.2.033467
  • Peer Reviewed / Open Access
• [Journal Article] Impact of the Crystal Orientation of Positive Electrodes on the Interface Resistance across a Solid Electrolyte and Electrode (2020)
  • Author(s): Nishio Kazunori、Nakamura Naoto、Horiba Koji、Kitamura Miho、Kumigashira Hiroshi、Shimizu Ryota、Hitosugi Taro
  • Journal Title: ACS Applied Energy Materials Volume: 3 Issue: 7 Pages: 6416-6421
  • DOI: 10.1021/acsaem.0c00644
  • Peer Reviewed / Open Access
• [Journal Article] Thickness-induced metal to insulator transition in Ru nanosheets probed by photoemission spectroscopy: Effects of disorder and Coulomb interaction (2020)
  • Author(s): Ootsuki Daiki、Kodera Kenjiro、Shimonaka Daiya、Arita Masashi、Namatame Hirofumi、Taniguchi Masaki、Minohara Makoto、Horiba Koji、Kumigashira Hiroshi、Ikenaga Eiji、Yasui Akira、Uchimoto Yoshiharu、Toyoda Satoshi、Morita Masahito、Fukuda Katsutoshi、Yoshida Teppei
  • Journal Title: Scientific Reports Volume: 10 Issue: 1 Pages: 15411-7
  • DOI: 10.1038/s41598-020-58057-9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Switching of band inversion and topological surface states by charge density wave (2020)
  • Author(s): Mitsuishi N.、Sugita Y.、Bahramy M. S.、Kamitani M.、Sonobe T.、Sakano M.、Shimojima T.、Takahashi H.、Sakai H.、Horiba K.、Kumigashira H.、Taguchi K.、Miyamoto K.、Okuda T.、Ishiwata S.、Motome Y.、Ishizaka K.
  • Journal Title: Nature Communications Volume: 11 Issue: 1 Pages: 24661-9
  • DOI: 10.1038/s41467-020-16290-w
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Electronic structure of a (3×3)-ordered silicon layer on Al(111) (2020)
  • Author(s): Sato Yusuke、Fukaya Yuki、Cameau Mathis、Kundu Asish K.、Shiga Daisuke、Yukawa Ryu、Horiba Koji、Chen Chin-Hsuan、Huang Angus、Jeng Horng-Tay、Ozaki Taisuke、Kumigashira Hiroshi、Niibe Masahito、Matsuda Iwao
  • Journal Title: Physical Review Materials Volume: 4 Issue: 6 Pages: 0640051-6
  • DOI: 10.1103/physrevmaterials.4.064005
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Observation of inverted band structure in the topological Dirac semimetal candidate CaAuAs (2020)
  • Author(s): Nakayama Kosuke、Wang Zhiwei、Takane Daichi、Souma Seigo、Kubota Yuya、Nakata Yuki、Cacho Cephise、Kim Timur、Ekahana Sandy Adhitia、Shi Ming、Kitamura Miho、Horiba Koji、Kumigashira Hiroshi、Takahashi Takashi、Ando Yoichi、Sato Takafumi
  • Journal Title: Physical Review B Volume: 102 Issue: 4 Pages: 1-5
  • DOI: 10.1103/physrevb.102.041104
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Artificially Designed Compositionally Graded Sr-Doped NaTaO3 Single-Crystalline Thin Films and the Dynamics of Their Photoexcited Electron?Hole Pairs (2020)
  • Author(s): Konno Rio、Maruyama Shingo、Kosaka Takumu、Katoh Ryuzi、Takahashi Ryota、Kumigashira Hiroshi、Ichikuni Nobuyuki、Onishi Hiroshi、Matsumoto Yuji
  • Journal Title: Chemistry of Materials Volume: 33 Issue: 1 Pages: 226-233
  • DOI: 10.1021/acs.chemmater.0c03487
  • Peer Reviewed / Open Access
• [Presentation] Electronic Structure of Hole-Doped CrxV1－xO2 Epitaxial Films Studied by in situ Photoemission Spectroscopy (2024)
  • Author(s): D. Shiga, X. Cheng, T. T. Kim, T. Kanda, N. Hasegawa, M. Kitamura, K. Yoshimatsu, and H. Kumigashira
  • Organizer: The International Conference on the Science and Technology for Advanced Ceramics and Data Driven Materials Research for Electronics
  • Int'l Joint Research
• [Presentation] Quantization condition of strongly correlated electrons in oxide nanostructures' (2024)
  • Author(s): Tatsuhio Kanda, Daisuke Shiga, Asato Wada, Ryotaro Hayasaka, Yuuki Masutake, Naoto Hasegawa, Miho Kitamura, Kohei Yoshimatsu, and Hiroshi Kumigashira
  • Organizer: The International Conference on the Science and Technology for Advanced Ceramics and Data Driven Materials Research for Electronics
  • Int'l Joint Research
• [Presentation] SrTi1-xVxO3量子井戸構造における強相関量子化状態の研究 (2024)
  • Author(s): 神田 龍彦、志賀 大亮、和田 亜里斗、早坂 亮太朗、増竹 悠紀、長谷川 直人、北村 未歩、吉松 公平、組頭 広志
  • Organizer: 2023年度量子ビームサイエンスフェスタ,
• [Presentation] 放射光電子分光による(CrxV1－x)2O3エピタキシャル薄膜の電子状態 (2024)
  • Author(s): 西翔平, 志賀大亮，井上晴太郎，T. Tirasutt，早坂亮太朗，渡邉颯彦，小澤健一，吉松公平，組頭広志
  • Organizer: 2024年第71回応用物理学会春季学術講演会
• [Presentation] VO2/W:VO2 (110)Rヘテロ構造における電子相転移の直接観測 (2024)
  • Author(s): 井上 晴太郎, 志賀 大亮, 早坂 亮太朗, T. Tirasutt ,渡邉 颯彦，長谷川 直人，小澤 健一，組頭 広志
  • Organizer: 2024年第71回応用物理学会春季学術講演会
• [Presentation] 放射光計測に立脚した新原理モットトランジスタの開発 (2023)
  • Author(s): 組頭広志
  • Organizer: ワイドギャップ半導体 第11回研究会
  • Invited
• [Presentation] 放射光電子分光によるSrVO3量子井戸の量子化条件の決定 (2023)
  • Author(s): 神田 龍彦、志賀 大亮、和田 亜里斗、早坂 亮太朗、増竹 悠紀、長谷川 直人、北村 未歩、吉松 公平、組頭 広志
  • Organizer: 2023年 第84回 応用物理学会 秋季学術講演会
• [Presentation] Electronic structure of SrNbO3/SrTiO3nterface studied by synchrotron-radiation photoemission spectroscopy (2023)
  • Author(s): Hiroshi KUMIGASHIRA
  • Organizer: 29th International Workshop on Oxide Electronics (iWOE29)
  • Int'l Joint Research
• [Presentation] Electronic structure of SrNbO3/SrTiO3 interface studied by synchrotron-radiation photoemission spectroscopy (2023)
  • Author(s): R. Hayasaka, T. Kanda, N. Hasegawa, Y. Masutake, A. Wada, M. Kitamura, D. Shiga, K. Yoshimatsu, H. Kumigashira
  • Organizer: 29th International Workshop on Oxide Electronics (iWOE29)
  • Int'l Joint Research
• [Presentation] Quantization condition of strongly correlated electrons in oxide nanostructures (2023)
  • Author(s): Tatsuhio Kanda, Daisuke Shiga, Asato Wada, Ryotaro Hayasaka, Yuuki Masutake, Naoto Hasegawa, Miho Kitamura, Kohei Yoshimatsu, and Hiroshi Kumigashira
  • Organizer: 29th International Workshop on Oxide Electronics (iWOE29)
  • Int'l Joint Research
• [Presentation] Electronic Structure of Hole-Doped CrxV1－xO2 Epitaxial Films Studied by in situ Photoemission Spectroscopy (2023)
  • Author(s): D. Shiga, X. Cheng, T. T. Kim, T. Kanda, N. Hasegawa, M. Kitamura, K. Yoshimatsu, and H. Kumigashira
  • Organizer: 29th International Workshop on Oxide Electronics (iWOE29)
  • Int'l Joint Research
• [Presentation] Angle-Resolved Photoemission Study on Ti2O3 Thin Films (2023)
  • Author(s): N. Hasegawa, K. Yoshimatsu, D. Shiga, T. Kanda, S. Miyazaki, M. Kitamura, K. Horiba, and H. Kumigashira
  • Organizer: 29th International Workshop on Oxide Electronics (iWOE29)
  • Int'l Joint Research
• [Presentation] Angle-Resolved Photoemission Study on Ti2O3 Thin Films (2023)
  • Author(s): R. Hayasaka, T. Kanda, N. Hasegawa, Y. Masutake, A. Wada, M. Kitamura, D. Shiga, K. Yoshimatsu, H. Kumigashira
  • Organizer: The 7th Symposium for the Core Research Clusters for Materials Science and Spintronics and the 6th Symposium on International Joint Graduate Program in Materials Science and Spintronics
  • Int'l Joint Research
• [Presentation] Electronic Structure of Supercell Compounds of Layered Bi-Rh-O Films (2023)
  • Author(s): "Y. Masutake,Daisuke Shiga, Tatsuhiko Kanda, Naoto Hasegawa, Ryotaro Hayasaka, Miho Kitamura, Kohei Yoshimatsu, Mizuki Ohno, Takahiro C. Fujita, Masashi Kawasaki,and Hiroshi Kumigashira"
  • Organizer: The 7th Symposium for the Core Research Clusters for Materials Science and Spintronics and the 6th Symposium on International Joint Graduate Program in Materials Science and Spintronics
  • Int'l Joint Research
• [Presentation] Electronic Structure of Hole-Doped CrxV1－xO2 Epitaxial Films Studied by in situ Photoemission Spectroscopy (2023)
  • Author(s): D. Shiga, X. Cheng, T. T. Kim, T. Kanda, N. Hasegawa, M. Kitamura, K. Yoshimatsu, and H. Kumigashira
  • Organizer: The 7th Symposium for The Core Research Clusters for Materials Science and Spintronics
  • Int'l Joint Research
• [Presentation] Quantization condition of strongly correlated electrons in oxide nanostructures' (2023)
  • Author(s): Tatsuhio Kanda, Daisuke Shiga, Asato Wada, Ryotaro Hayasaka, Yuuki Masutake, Naoto Hasegawa, Miho Kitamura, Kohei Yoshimatsu, and Hiroshi Kumigashira
  • Organizer: Material Research Meeting 2023
  • Int'l Joint Research
• [Presentation] Band Structure of Ti2O3 Thin Films determined by Angle-Resolved Photoemission Spectroscopy (2023)
  • Author(s): N. Hasegawa, K. Yoshimatsu, D. Shiga, T. Kanda, S. Miyazaki, M. Kitamura, K. Horiba, and H. Kumigashira
  • Organizer: Material Research Meeting 2023 (MRM2023)
  • Int'l Joint Research
• [Presentation] Resonant tunneling driven metal-insulator transition in double quantum-well structures of strongly correlated oxide (2023)
  • Author(s): Hiroshi Kumigashira
  • Organizer: APS March Meeting
  • Int'l Joint Research / Invited
• [Presentation] 膜厚によるTi2O3薄膜の格子変形制御 (2023)
  • Author(s): 高田 瀬那、吉松 公平、組頭 広志
  • Organizer: 第70回応用物理学会春季学術講演会
• [Presentation] その場放射光電子分光によるCrドープVO2エピタキシャル薄膜の電子相図 (2023)
  • Author(s): 志賀 大亮、CHENG Xianglin、金 兌炫、神田 龍彦、長谷川 直人、北村 未歩、吉松 公平、組頭 広志
  • Organizer: 第70回応用物理学会春季学術講演会
• [Presentation] 光電子分光によるBi-Rh-O層状化合物薄膜の電子状態解析 (2023)
  • Author(s): 増竹 悠紀、志賀 大亮、神田 龍彦、長谷川 直人、早坂 亮太朗、北村 未歩、吉松 公平、大野 瑞貴、藤田 貴啓、川崎 雅司、組頭 広志
  • Organizer: 第70回応用物理学会春季学術講演会
• [Presentation] 放射光電子分光によるSrVO3/LaAlO3ヘテロ構造の電子状態 (2023)
  • Author(s): 和田 亜里斗、神田 龍彦、志賀 大亮、増竹 悠紀、早坂 亮太朗、北村 未歩、吉松 公平、組頭 広志
  • Organizer: 第70回応用物理学会春季学術講演会
• [Presentation] 放射光電子分光によるSrNbO3/SrTiO3界面の電子状態 (2023)
  • Author(s): 早坂 亮太朗、神田 龍彦、長谷川 直人、増竹 悠紀、和田 亜里斗、Nathawuth Wongwutcharanukoun、北村 未歩、志賀 大亮、吉松 公平、組頭 広志
  • Organizer: 第70回応用物理学会春季学術講演会
• [Presentation] 放射光角度分解光電子分光によるTi2O3薄膜の金属・絶縁体転移の起源 (2023)
  • Author(s): 長谷川 直人、吉松 公平、志賀 大亮、神田 龍彦、宮崎 悟、北村 未歩、堀場 弘司、組頭 広志
  • Organizer: 第70回応用物理学会春季学術講演会
• [Presentation] 酸化物二重量子井戸構造の共鳴トンネル効果によるモット転移制御 (2023)
  • Author(s): 組頭広志
  • Organizer: 2022年度量子ビームサイエンスフェスタ
  • Invited
• [Presentation] 放射光計測に立脚した共鳴トンネルモットトランジスタの開発 (2022)
  • Author(s): 組頭広志
  • Organizer: システムデバイスロードマップ産学連携委員会（SDRJ）WG研究会
  • Invited
• [Presentation] 放射光計測に立脚した共鳴トンネルモットトランジスタの開発 (2022)
  • Author(s): 組頭広志
  • Organizer: 日本表面真空学会 東北・北海道支部 関東支部合同セミナー「原子レベル積層技術が拓く物性探索の新展開」
  • Invited
• [Presentation] 永久磁石を用いた二交流ホール効果測定装置の構築と酸化物半導体の電子物性評価 (2022)
  • Author(s): 吉松公平、成田千春、組頭広志
  • Organizer: 第83回応用物理学会秋季学術講演会
• [Presentation] 密度汎関数法によるTi2O3の金属絶縁体転移 (2022)
  • Author(s): 吉松公平、長谷川直人、組頭広志
  • Organizer: 第83回応用物理学会秋季学術講演会
• [Presentation] 角度分解光電子分光によるTi2O3薄膜のフェルミオロジー (2022)
  • Author(s): 長谷川直人、吉松公平、志賀大亮、神田龍彦、宮崎悟、北村未歩、堀場弘司、組頭広志
  • Organizer: 第83回応用物理学会秋季学術講演会
• [Presentation] 放射光電子分光によるSrVO3/LaAIO3/SrVO3二重量子井戸構造の電子状態 (2022)
  • Author(s): 和田亜里斗、神田龍彦、志賀大亮、CHENG Xianglin、金兌炫、北村未歩、吉松公平、組頭広志
  • Organizer: 第83回応用物理学会秋季学術講演会
• [Presentation] 放射光電子分光による SrTi1-xVxO3量子井戸の量子化状態解析 (2022)
  • Author(s): 神田 龍彦 、志賀大亮 、和田亜里斗 、長谷川直人、CHENG Xianglin、金兌炫、早坂亮太朗、北村未歩、吉松公平 、組頭 広志
  • Organizer: 放射光電子分光による SrTi1-xVxO3量子井戸の量子化状態解析
• [Presentation] 放射光電子分光によるCrxV1-xO2エピタキシャル薄膜の電子状態 (2022)
  • Author(s): 志賀 大亮、CHENG Xianglin、金 兌炫、神田 龍彦、長谷川 直人、北村 未歩、吉松 公平、組頭 広志
  • Organizer: 第83回応用物理学会秋季学術講演会
• [Presentation] VO2極薄膜における電子・結晶構造の膜厚依存性: 協調的モット-バイエルス転移の抑制 (2022)
  • Author(s): 志賀 大亮、楊 以理、長谷川 直人、神田 龍彦、德永 凌 祐、吉松 公平、湯川 龍、北村 未歩、堀場 弘司、組頭 広志
  • Organizer: 第69回応用物理学会春季学術講演会
  • Invited
• [Presentation] 放射光電子分光によるSrTi1-x Vx O3量子井戸の量子化状態 (2022)
  • Author(s): 神田 龍彦、志賀 大亮、和田 亜里斗、長谷川 直人、北村 未歩、吉松 公平、組頭 広志
  • Organizer: 第69回応用物理学会春季学術講演会
• [Presentation] LaAlO3 (110)基板上へのλ 型Ti3O5薄膜の直接合成 (2022)
  • Author(s): 吉松 公平、組頭 広志
  • Organizer: 第69回応用物理学会春季学術講演会
• [Presentation] Development of Resonant-Tunneling Mott Transistor Using Synchrotron-Radiation Spectroscopy (2022)
  • Author(s): Hiroshi KUMIGASHIRA
  • Organizer: Summit of Materials Science 2022 and GIMRT User Meeting 2022, Sendai International Center
  • Int'l Joint Research / Invited
• [Presentation] 放射光を用いた酸化物超構造の量子状態解析 (2021)
  • Author(s): 組頭広志
  • Organizer: 第82回応用物理学会 秋季学術講演会
  • Invited
• [Presentation] VO2/W:VO2 ヘテロ構造における電子相転移の直接観測 (2021)
  • Author(s): 志賀 大亮、神田 龍彦、長谷川 直人、北村 未歩、堀場 弘司、吉松 公平、組頭 広志
  • Organizer: 第82回応用物理学会 秋季学術講演会
• [Presentation] 4H-SiC(0001)基板を用いたTi2O3薄膜の合成 (2021)
  • Author(s): 宮崎 悟、吉松 公平、長谷川 直人、組頭 広志
  • Organizer: 第82回応用物理学会 秋季学術講演会
• [Presentation] 軟X線角度分解光電子分光によるTi2O3薄膜のバンド構造決定 (2021)
  • Author(s): 長谷川 直人、吉松 公平、志賀 大亮、神田 龍彦、宮崎 悟、北村 未歩、堀場 弘司、組頭 広志
  • Organizer: 第82回応用物理学会 秋季学術講演会
• [Presentation] Structure analysis of LaNiO3/LaMnO3 interfaces to elucidate local polarization (2021)
  • Author(s): Yusuke Wakabayashi, Masato Anada, Satoshi Sakaguchi, Kazuki Nagai, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira
  • Organizer: MATERIALS RESEARCH MEETING 2021 PACIFICO YOKOHAMA
  • Int'l Joint Research
• [Presentation] Thickness Dependence of Electronic and Crystal Structures in VO2 Ultrathin Films (2021)
  • Author(s): Daisuke Shiga, Billy Eric Yang, Naoto Hasegawa, Tatsuhiko Kanda, Ryosuke Tokunaga, Kohei Yoshimatsu, Ryu Yukawa, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira
  • Organizer: MATERIALS RESEARCH MEETING 2021 PACIFICO YOKOHAMA
  • Int'l Joint Research
• [Presentation] Charge Transfer Phenomena in Perovskite-Oxide Interfaces investigated by Resonant Photoemission Spectroscopy (2021)
  • Author(s): Miho Kitamura, Koji Horiba, Masaki Kobayashi, Makoto Minohara, Enju Sakai, Ryu Yukawa, Hiroshi Fujioka, Hiroshi Kumigashira
  • Organizer: MATERIALS RESEARCH MEETING 2021 PACIFICO YOKOHAMA
  • Int'l Joint Research
• [Presentation] Metallic conductivity in undoped Ti2O3 films (2021)
  • Author(s): Kohei Yoshimatsu, Naoto Hasegawa, Yusuke Nambu, Yuta Ishii, Yusuke Wakabayashi, Hiroshi Kumigashira
  • Organizer: MATERIALS RESEARCH MEETING 2021 PACIFICO YOKOHAMA
  • Int'l Joint Research
• [Presentation] Synchrotron radiation spectroscopic study on epitaxial Ti2O3 thin films (2021)
  • Author(s): Naoto Hasegawa, Kohei Yoshimatsu, Daisuke Shiga, Tatsuhiko Kanda, Ryosuke Tokunaga, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira
  • Organizer: MATERIALS RESEARCH MEETING 2021 PACIFICO YOKOHAMA
  • Int'l Joint Research
• [Presentation] "Electronic structure of transparent electrode SrTi1－xVxO3 films studied by in situ photoemission spectroscopy (2021)
  • Author(s): T. Kanda, D. Shiga, R. Yukawa, N. Hasegawa, D. K. Nguyen, X. Cheng, R. Tokunaga, M. Kitamura, K. Horiba, K. Yoshimatsu, H. Kumigashira
  • Organizer: MATERIALS RESEARCH MEETING 2021 PACIFICO YOKOHAMA
  • Int'l Joint Research
• [Presentation] 放射光電子分光による SrTi1-xVxO3 薄膜の透明電極材料スクリーニング (2020)
  • Author(s): 神田 龍彦，志賀 大亮，湯川 龍 ，長谷川 直人 ，徳永 凌佑 ，CHENG Xianglin , 北村 未歩 ，堀場 弘司 ，吉松 公平 ，組頭 広志
  • Organizer: 第81回応用物理学会秋季学術講演会
• [Presentation] VO2極薄膜における電子・結晶構造の膜厚依存性 (2020)
  • Author(s): 志賀大亮、楊以理、長谷川直人、神田龍彦、徳永凌祐、吉松公平、湯川龍、北村未歩、堀場弘司、組頭広志
  • Organizer: 第81回応用物理学会秋季学術講演会
• [Presentation] アナターゼ型TiO2薄膜の作製とアルカリ金属吸着による表面の2次元電子状態制御 (2020)
  • Author(s): 湯川龍、簔原誠人、志賀大亮、北村未歩、三橋太一、小林正起、堀場弘司、組頭広志
  • Organizer: 2020年度 関西薄膜・表面物理セミナー
• [Presentation] 非対称な電荷再分布が誘起するペロブスカイト遷移金属酸化物の界面磁性 (2020)
  • Author(s): 北村未歩、小林正起、坂井延寿、簔原誠人、湯川龍、志賀大亮、雨宮健太、野中洋亮、芝田悟朗、藤森淳、藤岡洋、堀場弘司、組頭広志
  • Organizer: 第30回日本MRS年次大会
  • Invited
• [Presentation] VO2 極薄膜における電子・結晶構造の膜厚依存性 (2020)
  • Author(s): 志賀大亮 、楊以理 、長谷川直人 、神田龍彦 、徳永凌祐 、吉松公平 、湯川龍 、 北村未歩 、堀場弘司 、組頭広志
  • Organizer: 第34回日本放射光学会年会・放射光科学合同シンポジウム
• [Presentation] 酸化物デバイス表面・界面で発現する新奇量子状態 (2020)
  • Author(s): 組頭広志
  • Organizer: 令和２年度日本表面真空学会東北・北海道支部学術講演会
  • Invited
• [Presentation] ディラック酸化物の探索 (2020)
  • Author(s): 組頭広志
  • Organizer: 2020年度量子ビームサイエンスフェスタ
• [Presentation] バナジウム酸化物デバイス界面に出現する新たな電子相の解明と制御 (2020)
  • Author(s): 志賀大亮 、楊以理 、長谷川直人 、神田龍彦 、徳永凌祐 、北村未歩 、 湯川龍 、吉松公平 、堀場弘司 、組頭広志
  • Organizer: 2020年度量子ビームサイエンスフェスタ
• [Presentation] 機能性酸化物エレクトロニクス～はじめの一歩～ (2020)
  • Author(s): 組頭広志
  • Organizer: 第68回応用物理学会春季学術講演会
  • Invited
• [Presentation] 金属伝導を示す Ti2O3 薄膜 (2020)
  • Author(s): 吉松 公平、長谷川 直人、南部 雄亮、石井 祐太、若林 裕助、組頭 広志
  • Organizer: 第68回応用物理学会春季学術講演会
• [Presentation] 放射光電子分光によるTi2O3エピタキシャル薄膜の電子状態解析 (2020)
  • Author(s): 長谷川 直人、吉松 公平、志賀 大亮、神田 龍彦、徳永 凌祐、北村 未歩、堀場 弘司、組頭 広志
  • Organizer: 第68回応用物理学会春季学術講演会
• [Presentation] 電気化学反応を用いたWO3薄膜へのリチウムイオン拡散の定量的評価 (2020)
  • Author(s): 徳永 凌祐、吉松 公平、組頭 広志
  • Organizer: 第68回応用物理学会春季学術講演会
• [Book] 「薄膜作製応用ハンドブック」（權田 俊一監修）第3編 薄膜・表面・界面の分析・評価、第一章 薄膜・表面・界面の分析評価法 (2020)
  • Author(s): 組頭広志
  • Publisher: 株式会社 エヌ・ティー・エス
• [Remarks] 東北大学多元物質科学研究所 組頭研究室
  • URL: http://www2.tagen.tohoku.ac.jp/lab/kumigashira/html/
• [Remarks] 東北大学多元物質科学研究所組頭研究室
  • URL: http://www2.tagen.tohoku.ac.jp/lab/kumigashira/html/
• [Remarks] 東北大学多元物質科学研究所組頭研究室
  • URL: http://www2.tagen.tohoku.ac.jp/lab/kumigashira/html/index.html