Analysis of the surfaces and interfaces of strongly correlated oxide based on the international platform of next-generation synchrotron light(Fostering Joint International Research)

• Project/Area Number: 16KK0107
• Research Category: Fund for the Promotion of Joint International Research (Fostering Joint International Research)
• Allocation Type: Multi-year Fund
• Research Field: Thin film/Surface and interfacial physical properties
• Research Institution: Tohoku University (2022); High Energy Accelerator Research Organization (2016-2017)
• Principal Investigator: KUMIGASHIRA Hiroshi 東北大学, 多元物質科学研究所, 教授 (00345092)
• Project Period (FY): 2017 – 2022
• Project Status: Completed (Fiscal Year 2022)
• Budget Amount: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000)
• Keywords: 量子井戸構造 / 角度分解光電子分光 / 酸化物ヘテロ構造 / 放射光 / バンド構造 / 酸化物薄膜 / 酸化物エレクトロニクス / 機能性ナノ構造 / 強相関電子系 / 機能性酸化物 / 量子ビーム / 量子井戸

Outline of Final Research Achievements

The quantum confinement of strongly correlated electrons in artificial structures has heralded the possibility of tailoring the extraordinary physical properties of strongly correlated oxides, such as orbital selective quantization and the giant Rashba effect. This research project aimed to design novel physical properties that appear at the quantum-well structures of strongly correlated oxides under the scheme of international collaborative research among the Japanese, German group (University of Wurzburg and synchrotron facilities at Europe), and French group (Paris-Sud University and Synchrotron SOLEIL). Specifically, by combining the state-of-the-art synchrotron-radiation spectroscopic analysis in Europe with the world-leading fabrication techniques of oxide nanostructures and oxide devices in Japan, we explored the functions of novel two-dimensional electron liquid states induced in oxide quantum-well structures and designed these structures based on these results.

Academic Significance and Societal Importance of the Research Achievements

欧州の次世代放射光施設における最先端放射光解析技術と物質設計を組み合わせた本研究により、酸化物量子井戸構造で発現する低次元電子液体の機能を用いた物質・デバイス設計に明確な指針を与えることができたと考えられる。また、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、国内の次世代放射光施設であるナノテラスへの最先端放射光解析技術の導入を図った。世界最先端の放射光計測・解析を実現する技術とノウハウを獲得することで、次世代放射光が稼働し始めると同時にシームレスに研究を展開することが可能になり、酸化物デバイス研究のみならず、将来的により広範囲の物質開発に大きく貢献できるものと考えられる。

Research Products

• [Int'l Joint Research] パリ南大学(フランス) (2021)
• [Int'l Joint Research] パリ南大学(フランス) (2017)
• [Int'l Joint Research] ヴュルツブルグ大学(ドイツ) (2017)
• [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
• [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、Tae Hyun Kim、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、Tae Hyun Kim、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、Tae Hyun Kim、早坂亮太朗、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、Tae Hyun Kim、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
• [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/