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Emergent functions of transition-metal oxides with low valence and metastable structures

Research Project

Project/Area Number 21H02026
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 36010:Inorganic compounds and inorganic materials chemistry-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

Ohtomo Akira  東京工業大学, 物質理工学院, 教授 (10344722)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2023: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2022: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2021: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Keywords薄膜電子材料 / エピタキシー / 電気化学 / 超伝導材料・素子 / トポケミカル反応
Outline of Research at the Start

本研究では,多様な結晶構造や原子価をとる遷移金属酸化物に着目し,それらの準安定相を薄膜技術ならびに電気化学的な酸化還元プロセスを用いて作製し,低い原子価における未解明の電子状態や遷移金属の酸化還元に伴う電子相転移を元素横断的に調べることを目的とする。また,これにより新たな電気伝導性,磁性,光学特性を発現する材料の創製を目指す。

Outline of Final Research Achievements

The superconductivity and metal-insulator transitions provide electronic circuits with various functionalities that cannot be realized in conventional semiconductor integrated circuits. In recent years, research on controlling the superconductivity and metal-insulator transitions in epitaxial thin films by means of external fields has attracted much attention from both fundamental and applied perspectives. In this study, we aim at observing and analyzing the electronic states of epitaxially grown transition-metal oxides in-situ in an electrochemical cell, and to establish this configulation as a fundamental technology for the creation of new electronic functions. We have established a method to realize a metastable crystal structure in thin films, which cannot be obtained in bulk, as well as an experimental method to observe the effect of direct composition modulation by an external field as a significant change in electrical conductivity.

Academic Significance and Societal Importance of the Research Achievements

本研究成果の学術的な意義は,不安定な物質を薄膜化によって安定化することで電気化学的なキャリアドープを可能にしたことであり,その結果これまで分かっていなかった特異な電気伝導性を詳しく調べ,その起源を明らかにすることに成功したことである。本研究において電気化学的なキャリアドープに用いた素子構造は,リチウムイオン二次電池の基本構造と同じである。電気化学ドープへの耐性が高いことが判明した物質群を電池材料として利用することは,電池寿命の改善にもつながる。したがって,本研究の社会的意義は,物性測定のツールを開発したことだけでなく、エネルギー貯蔵技術の発展に貢献する実験システムを開発したことである。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (69 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (2 results) Journal Article (11 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 11 results,  Open Access: 2 results) Presentation (52 results) (of which Int'l Joint Research: 12 results,  Invited: 6 results) Remarks (3 results) Patent(Industrial Property Rights) (1 results)

  • [Int'l Joint Research] South China University of Technology(中国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Indian Institute of Technology Kanpur(インド)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Electrochemical modulation of electronic states in strongly correlated transition-metal oxides2022

    • Author(s)
      大友 明, 相馬 拓人
    • Journal Title

      Oyo Buturi

      Volume: 91 Issue: 6 Pages: 340-345

    • DOI

      10.11470/oubutsu.91.6_340

    • ISSN
      0369-8009, 2188-2290
    • Year and Date
      2022-06-01
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electrochemical modulation of electronic states in strongly correlated transition-metal oxides2022

    • Author(s)
      Akira Ohtomo, Takuto Soma, Kohei Yoshimatsu
    • Journal Title

      JSAP Review

      Volume: 2022 Issue: 0 Pages: n/a

    • DOI

      10.11470/jsaprev.220202

    • ISSN
      2437-0061
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Epitaxial growth of MoO3 polymorphs and impacts of Li-ion electrochemical reactions on their structural and electronic properties2022

    • Author(s)
      Shuxin Zhang, Tatsuya Yajima, Takuto Soma, Akira Ohtomo
    • Journal Title

      Applied Physics Express

      Volume: 15 Issue: 5 Pages: 055505-055505

    • DOI

      10.35848/1882-0786/ac6aae

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Enhancement of transparency in epitaxially-grown p-type SnO films by surface-passivation treatment in a Na2S aqueous solution2022

    • 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

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Two-dimensional superconductivity in single-band correlated 2H-type NbO2 layers2022

    • 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

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Enhancement of transparency in epitaxially-grown p-type SnO films by surface-passivation treatment in a Na2S aqueous solution2022

    • Author(s)
      S. Uchida, T. Soma, M. Kitamura, H. Kumigashira, A. Ohtomo
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: N/A

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Epitaxial growth of MoO3 polymorphs and impacts of Li-ion electrochemical reactions on their structural and electronic properties2022

    • Author(s)
      S. Zhang, T. Yajima, T. Soma, A. Ohtomo
    • Journal Title

      Applied Physics Express

      Volume: N/A

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 強相関遷移金属酸化物の電気化学的な電子状態の変調2022

    • Author(s)
      大友 明,相馬 拓人
    • Journal Title

      応用物理

      Volume: N/A

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Epitaxial stabilization of complete solid-solution β-(AlxGa1-x)2O3 (100) films by pulsed-laser deposition2021

    • Author(s)
      R. Wakabayashi, K. Yoshimatsu, M. Hattori, J.-S. Lee, O. Sakata, A. Ohtomo
    • Journal Title

      Crystal Growth and Design

      Volume: 21 Issue: 5 Pages: 2844-2849

    • DOI

      10.1021/acs.cgd.1c00030

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Optical properties of LiNbO2 thin films2021

    • Author(s)
      T. Kurachi, T. Yamaguchi, E. Kobayashi, T. Soma, A. Ohtomo, T. Makino
    • Journal Title

      Physica B: Condensed Matter

      Volume: 621 Pages: 413259-413259

    • DOI

      10.1016/j.physb.2021.413259

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Heavy-fermion metallic state and Mott transition induced by Li-ion intercalation in LiV2O4 epitaxial films2021

    • Author(s)
      Yajima Tatsuya、Soma Takuto、Yoshimatsu Kohei、Kurita Nobuyuki、Watanabe Masari、Ohtomo Akira
    • Journal Title

      Physical Review B

      Volume: 104 Issue: 24 Pages: 245104-245104

    • DOI

      10.1103/physrevb.104.245104

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] Cu(II)原料を用いたパルスレーザ堆積法によるCuFeO2薄膜の作製2024

    • Author(s)
      木下 裕貴,相馬 拓人,吉松 公平,大友 明
    • Organizer
      第71回応用物理学会春季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] (ScxGa1-x)2O3薄膜の偏光反射分光とバンド端構造の異方性2024

    • Author(s)
      是石 和樹,尾沼 猛儀,相馬 拓人,大友 明
    • Organizer
      第71回応用物理学会春季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Fabrication of Zirconium Nitride Hydride Epitaxial Films by Alternating-Target Pulsed-Laser Deposition2023

    • Author(s)
      Daichi Miyazaki, Ziyang Cao, Takuto Soma, Akira Ohtomo
    • Organizer
      Material Research Meeting 2023 (MRM2023)/International Union of Materials Research Societies-International Conference in Asia (IUMRS-ICA)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Epitaxial Growth of Ultrawide Bandgap β-(ScxGa1-x)2O3 Films on β-Ga2O3 (100) Substrate by Pulsed-Laser Deposition2023

    • Author(s)
      Kazuki Koreishi, Takuto Soma, Akira Ohtomo
    • Organizer
      Material Research Meeting 2023 (MRM2023)/International Union of Materials Research Societies-International Conference in Asia (IUMRS-ICA)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Strongly correlated superconductivity in two-dimensional 2H-NbO2 layers2023

    • Author(s)
      Takuto Soma, Kohei Yoshimatsu, Akira Ohtomo
    • Organizer
      The 4th Workshop on Functional Materials Science (FMS2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Emergent properties of transition‐metal oxides with low valence and metastable structures2023

    • Author(s)
      Akira Ohtomo
    • Organizer
      The 4th Workshop on Functional Materials Science (FMS2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 歪みLaxSr1-xVO3薄膜における非Fermi液体的挙動と反強磁性Mott転移2023

    • Author(s)
      小川 茉白,相馬 拓人,大友 明
    • Organizer
      第84回応用物理学会秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 二次元MoO3/三次元WO3エピタキシャル積層膜の作製とLi挿入挙動2023

    • Author(s)
      細川 紳,相馬 拓人,大友 明
    • Organizer
      第84回応用物理学会秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 異常高原子価ダブルペロブスカイト型LaSrFeNiO6薄膜の合成2023

    • Author(s)
      本田 裕貴,相馬 拓人,大友 明
    • Organizer
      第84回応用物理学会秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] van der Waals酸化物2H-NbO2: ハーフフィルドMott絶縁体2023

    • Author(s)
      相馬 拓人,佐藤 礼,大友 明
    • Organizer
      第84回応用物理学会秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ターゲット交互積層法によるZrNxHy薄膜の作製と金属-絶縁体転移2023

    • Author(s)
      宮崎 大地,相馬 拓人,大友 明
    • Organizer
      第84回応用物理学会秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 強磁性Fe4N/超伝導NbN接合における超伝導特性と近接効果2023

    • Author(s)
      吉田 悠真,相馬 拓人,大友 明
    • Organizer
      第84回応用物理学会秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 面内圧縮歪みを有するβ-(ScxGa1-x)2O3 薄膜のエピタキシャル成長2023

    • Author(s)
      是石 和樹,相馬 拓人,大友 明
    • Organizer
      第84回応用物理学会秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] β-(ScxGa1-x)2O3薄膜の電子状態およびバンドオフセット評価2023

    • Author(s)
      是石 和樹,相馬 拓人,組頭 広志,大友 明
    • Organizer
      第84回応用物理学会秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 遷移金属水素化物の薄膜成長と電子機能開発2023

    • Author(s)
      大友 明
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] ミスカット基板上に作製したダブルペロブスカイト型酸化物薄膜の物性2023

    • Author(s)
      南野 龍樹,相馬 拓人,大友 明
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] β-パイロクロア型酸化物における金属-絶縁体転移とラットリング運動2023

    • Author(s)
      相馬 拓人,吉松 公平,堀場 弘司,組頭 広志,大友 明
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Strain engineering of β-Ga2O3: Pulsed-laser deposition on (100) θ-Al2O3 templates and impacts of compressive strain on physical properties2022

    • Author(s)
      Kazuki Koreishi, Takuto Soma, Motohisa Kado, Akira Ohtomo,
    • Organizer
      The 4th International Workshop on Gallium Oxide and Related Materials (IWGO-4)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electrochemical modulation of electronic states in strongly correlated transition-metal oxides2022

    • Author(s)
      Akira Ohtomo, Tatsuya Yajima, Zhang Shuxin, Takuto Soma
    • Organizer
      28th International Workshop on Oxide Electronics (iWOE28)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Heteroepitaxial growth of molybdenum bronzes for exploring dimensionality- and composition-controlled electronic properties2022

    • Author(s)
      Zhang Shuxin, Takuto Soma, Akira Ohtomo
    • Organizer
      The 5th International Union of Materials Research Societies International Conference of Young Researchers on Advanced Materials (IUMRS-ICYRAM2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 強相関遷移金属酸化物の電気化学的な電子状態の変調~Go Greenな酸化還元反応場を設計し強相関電子のふるまいを探る~2022

    • Author(s)
      大友 明
    • Organizer
      応用物理学会JSAP Review創刊記念VRシンポジウム「グリーントランスフォーメーションを加速するJSAP Review」
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 層状Li1-xNbO2薄膜のトポケミカル反応と深さ方向Li組成分析2022

    • Author(s)
      佐藤 礼,相馬 拓人,大友 明
    • Organizer
      第12回CSJ化学フェスタ2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] 格子歪み印加によるSrVO3の電気伝導性の変調2022

    • Author(s)
      小川 茉白,相馬 拓人,大友 明
    • Organizer
      第12回CSJ化学フェスタ2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] 面内圧縮歪みを有するβ-Ga2O3薄膜のエピタキシャル成長2022

    • Author(s)
      是石 和樹,相馬 拓人,加渡 幹尚,大友 明
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] パルスレーザ堆積法による(111)配向LaHx薄膜の作製と水素量制御2022

    • Author(s)
      曹 子陽,相馬 拓人,大友 明
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 溶液処理による超伝導Li1-xNbO2薄膜のLi組成制御2022

    • Author(s)
      佐藤 礼,相馬 拓人,組頭 広志,大友 明
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 二次元NbO2層における超伝導ドームと磁気量子臨界挙動2022

    • Author(s)
      相馬 拓人,吉松 公平,大友 明
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 強磁性Fe4N/超伝導NbN 接合のエピタキシーと伝導特性2022

    • Author(s)
      吉田 悠真,相馬 拓人,大友 明
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] AMoO2 (A = Li, Na, K): Two-dimensional Mott insulators with tunable MoO2 interlayer distance2022

    • Author(s)
      Zhang Shuxin,Takuto Soma,Akira Ohtomo
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Impact of Au surfactant on composition and optical properties of gallium oxysulfide films2022

    • Author(s)
      Zhou Weiqi,Takuto Soma,Akira Ohtomo
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] パルスレーザ体積法によるGdMnO3/LaNiO3超格子構造の作製2022

    • Author(s)
      山岸 祐太,サフー ラムチャンドラ,相馬 拓人,大友 明
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 分極界面を有するSrFeO3/LaNiO3ヘテロ構造の作製と伝導特性2022

    • Author(s)
      本田 裕貴,相馬 拓人,大友 明
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Tunable exchange bias effect in manganese- and nickel-based artificial perovskite superlattice structures2022

    • Author(s)
      Ramchandra Sahoo, Ryuki Nanno, Yuta Yamagishi, Takuto Soma, Akira Ohtomo
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 二次元三角格子2H-NbO2層における強相関電子と超伝導2022

    • Author(s)
      相馬 拓人,吉松 公平,堀場 弘司,組頭 広志,大友 明
    • Organizer
      日本物理学会 2022年秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Li イオン脱挿入による強相関電子系遷移金属酸化物薄膜の物性変調2022

    • Author(s)
      矢島 達也,張 書馨,佐藤 礼,相馬 拓人,大友 明
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Magnetic frustration of multiple phases in LaMnO3/LaNiO3 superlattices2022

    • Author(s)
      R. C. Sahoo,張 樹桐,大友 明
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ダブルペロブスカイト型 La2MnCoO6 薄膜における B アンチサイト欠陥が生むスピングラス的挙動と巨大交換バイアス2022

    • Author(s)
      張 樹桐,サフー ラムチャンドラ,相馬 拓人,大友 明
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] IV族遷移金属水素化物および窒化物の薄膜成長と仕事関数評価2022

    • Author(s)
      曹 子陽,林 遼一郎,相馬 拓人,大友 明
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] エピタキシャル歪みによるSrVO3薄膜のバンド幅制御と有効質量の発散2022

    • Author(s)
      小川 茉白,相馬 拓人,大友 明
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] A p-type transparent conducting oxide with 2D superconductivity2021

    • Author(s)
      相馬 拓人,大友 明
    • Organizer
      MRS Spring 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ペロブスカイト型V酸化物の電子状態におけるエピタキシャル歪みの効 果:フェルミ液体論とバンド計算による解析2021

    • Author(s)
      相馬 拓人,岡部 宏和,大友 明
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] LiV2O4エピタキシャル薄膜へのLiイオン挿入とその場構造解析2021

    • Author(s)
      矢島 達也,相馬 拓人,大友 明
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ダブルペロブスカイト型 La2MnCoO6薄膜のBアンチサイト欠陥の制御と交換バイアスの観測2021

    • Author(s)
      張 樹桐,サフー ラムチャンドラ,相馬 拓人,北村 未歩,堀場 弘司,組頭 広志,坂田 修身,大友 明
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] p型透明SnO薄膜の作製と溶液反応による硫化プロセスの検討2021

    • Author(s)
      内田 直理,相馬 拓人,大友 明
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Layer-by-layer growth of (111)-oriented LaMnO3 and LaNiO3 films2021

    • Author(s)
      R. C. Sahoo, S. Zhang, Y. Takeuchi, A. Ohtomo
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] トポケミカル反応による層状 NbO2の薄膜合成に関する検討2021

    • Author(s)
      佐藤 礼,相馬 拓人,大友 明
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] マグネリ相チタン酸化物の異方的圧力効果2021

    • Author(s)
      菊池 佑斗,川幡 武,川島 千弦,石田 康平,上岡 隼人,高橋 博樹,吉松 公平,相馬 拓人,大友 明
    • Organizer
      第62回高圧討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 異常原子価を有する層状ニッケル酸リチウム薄膜のエピタキシャル成長と電気伝導性2021

    • Author(s)
      矢島 達也,相馬 拓人,大友 明
    • Organizer
      CSJ 2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] Anisotropic pressure effect on superconducting and bipolaronic insulator to metal transition in Ti4O7 epitaxial film2021

    • Author(s)
      菊池 佑斗,川島 千弦,石田 康平,上岡 隼人,高橋 博樹,吉松 公平,相馬 拓人,大友 明
    • Organizer
      10th Asian Conference on High Pressure Research
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electrical conductivity of LiNiO2 films with two-dimensional NiO2 layers2021

    • Author(s)
      矢島 達也,相馬 拓人,大友 明
    • Organizer
      MRM 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Work-function control of metallic IV compounds by anion engineering2021

    • Author(s)
      曹 子陽,林 遼一郎,相馬 拓人,大友 明
    • Organizer
      MRM 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Epitaxial Growth of p-Type SnO Films and Soft Chemical Sulfurization2021

    • Author(s)
      内田 直理,相馬 拓人,大友 明
    • Organizer
      MRM 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 東京工業大学物質理工学院応用化学系大友研究室

    • URL

      http://www.ohtomo.apc.titech.ac.jp/

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
  • [Remarks] 「人工格子が切り拓く酸化物エレクトロニクス」大友明研究室 - 物質理工学院

    • URL

      https://www.youtube.com/watch?v=HJUKErtQSW4

    • Related Report
      2021 Annual Research Report
  • [Remarks] Oxide electronics opened up by artificial lattices

    • URL

      https://www.youtube.com/watch?v=-U0LUpCi3Uc

    • Related Report
      2021 Annual Research Report
  • [Patent(Industrial Property Rights)] 酸化ガリウムの製造方法2021

    • Inventor(s)
      大友 明、若林 諒、李 政洙
    • Industrial Property Rights Holder
      トヨタ自動車
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Acquisition Date
      2022
    • Related Report
      2022 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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