酸化物界面を用いた高効率スピン流電流変換の実証とスピントロニクスデバイスの創出

• Project/Area Number: 22KJ0615
• Project/Area Number (Other): 21J21102 (2021-2022)
• Research Category: Grant-in-Aid for JSPS Fellows
• Allocation Type: Multi-year Fund (2023); Single-year Grants (2021-2022)
• Section: 国内
• Review Section: Basic Section 21050:Electric and electronic materials-related
• Research Institution: The University of Tokyo
• Principal Investigator: 高田 真悟 東京大学, 工学系研究科, 特別研究員(DC1)
• Project Period (FY): 2023-03-08 – 2024-03-31
• Project Status: Completed (Fiscal Year 2023)
• Budget Amount: ¥3,100,000 (Direct Cost: ¥3,100,000); Fiscal Year 2023: ¥1,000,000 (Direct Cost: ¥1,000,000); Fiscal Year 2022: ¥1,000,000 (Direct Cost: ¥1,000,000); Fiscal Year 2021: ¥1,100,000 (Direct Cost: ¥1,100,000)
• Keywords: スピントロニクス / スピン流-電流変換 / ペロブスカイト酸化物 / 分子線エピタキシー法 / ワイルフェルミオン / 分子線エピタキシー / ペロブスカイト型酸化物 / 二次元電子ガス

Outline of Research at the Start

近年の情報技術発展に伴い、メモリの消費電力が増大しており、この問題を解決するために、超低消費電力メモリ（SOT-MRAM）が提案されている。このメモリの書き込み動作はスピン流-電流相互変換を用い、スピン流-電流相互変換効率が高いほど低消費電力動作が可能である。本研究では、ペロブスカイト酸化物の界面を用いた高効率スピン流-電流変換と磁化反転の研究を行っている。ペロブスカイト酸化物SrTiO3界面の二次元電子ガスを用いたスピントロニクスデバイスの創出を目指し、研究を行っている。

Outline of Annual Research Achievements

本研究では、ペロブスカイト酸化物界面の二次元電子ガスを用いたスピン流-電流相互変換の物理現象開拓と超低消費電力動作可能なメモリの実現を目指した。
分子線エピタキシー法を用いて、高品質(La,Sr)MnO3/LaTiO3/SrTiO3構造を作製し、全ての材料系で最高効率のスピン流-電流変換を記録した。また、放射光施設を用いたバンド構造評価と理論計算を組み合わせることで、高効率スピン流-電流変換の起源を明らかにした。
続いて、メモリ応用に向けて、強磁性ペロブスカイト型酸化物SrRuO3に着目し、分子線エピタキシー法を用いてSrTiO3基板上に作製を行った。構造評価と電気伝導評価から、世界最高品質クラスのSrRuO3薄膜の作製に成功した。磁化や電気伝導の膜厚依存性に関して詳細な調査を行い、メモリ応用に向けた最適な膜厚、抵抗値、磁化特性などの知見を得ることができた。さらに、角度を変えながら高磁場測定を行うことで、ワイルフェルミオンにおけるフェルミアーク由来の二次元伝導が観測された。また、意図的にRuを欠損させたSrRuO3薄膜を作製し、膜厚依存性を調べた。Ruが欠損したSrRuO3薄膜では、5 nm以下でトポロジカルホール効果に似た異常ホール効果が観測された。以上の結果を、膜厚、品質、温度からなる相図で示すことで、SrRuO3の磁気伝導現象を包括的に理解することに成功した。最後に、SrとRuの化学量論比が一致した高品質SrRuO3薄膜と意図的にRuを欠損させたSrRuO3薄膜において、スピン流-電流変換効率を調べた。SrとRuの化学量論比が一致しているほど、変換効率が高くなることが分かった。

Research Products

• [Journal Article] Reduced dead layers and magnetic anisotropy change in La2/3Sr1/3MnO3 membranes released from an SrTiO3 substrate (2024)
  • Author(s): Arai Takuma、Kaneta-Takada Shingo、Anh Le Duc、Kobayashi Masaki、Seki Munetoshi、Tabata Hitoshi、Tanaka Masaaki、Ohya Shinobu
  • Journal Title: Applied Physics Letters Volume: 124 Issue: 6 Pages: 1-6
  • DOI: 10.1063/5.0180288
  • Peer Reviewed
• [Journal Article] Giant Spin‐Valve Effect in Planar Spin Devices Using an Artificially Implemented Nanolength Mott‐Insulator Region (2023)
  • Author(s): Endo Tatsuro、Tsuruoka Shun、Tadano Yuriko、Kaneta‐Takada Shingo、Seki Yuichi、Kobayashi Masaki、Anh Le Duc、Seki Munetoshi、Tabata Hitoshi、Tanaka Masaaki、Ohya Shinobu
  • Journal Title: Advanced Materials Volume: 未定 (Accepted) Issue: 28 Pages: 2300110-2300110
  • DOI: 10.1002/adma.202300110
  • Peer Reviewed / Open Access
• [Journal Article] Scattering-dependent transport of SrRuO3 films: From Weyl fermion transport to hump-like Hall effect anomaly (2023)
  • Author(s): Kaneta-Takada Shingo、Wakabayashi Yuki K.、Krockenberger Yoshiharu、Irie Hiroshi、Ohya Shinobu、Tanaka Masaaki、Taniyasu Yoshitaka、Yamamoto Hideki
  • Journal Title: Physical Review Materials Volume: 7 Issue: 5 Pages: 1-8
  • DOI: 10.1103/physrevmaterials.7.054406
  • Peer Reviewed / Open Access
• [Journal Article] Scattering-dependent transport of SrRuO3 films: From Weyl fermion transport to hump-like Hall effect anomaly (2023)
  • Author(s): S. Kaneta-Takada, Y. K. Wakabayashi, Y. Krockenberger, S. Ohya, M. Tanaka, Y. Taniyasu, H. Yamamoto
  • Journal Title: arXiv Volume: 2302.04568
  • Open Access
• [Journal Article] High-mobility two-dimensional carriers from surface Fermi arcs in magnetic Weyl semimetal films (2022)
  • Author(s): Kaneta-Takada Shingo、Wakabayashi Yuki K.、Krockenberger Yoshiharu、Nomura Toshihiro、Kohama Yoshimitsu、Nikolaev Sergey A.、Das Hena、Irie Hiroshi、Takiguchi Kosuke、Ohya Shinobu、Tanaka Masaaki、Taniyasu Yoshitaka、Yamamoto Hideki
  • Journal Title: npj Quantum Materials Volume: 7 Issue: 1 Pages: 1-12
  • DOI: 10.1038/s41535-022-00511-0
  • Peer Reviewed / Open Access / 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] Theoretical analysis of the inverse Edelstein effect at the LaAlO3 / SrTiO3 interface with an effective tight-binding model: Important role of the second dxy subband (2022)
  • Author(s): S. Arai, S. Kaneta-Takada, L. D. Anh, M. Tanaka, and S. Ohya
  • Journal Title: Appl. Phys. Express Volume: 15 Issue: 1 Pages: 013005-013005
  • DOI: 10.35848/1882-0786/ac435c
  • Peer Reviewed
• [Journal Article] Alternation of Magnetic Anisotropy Accompanied by Metal-Insulator Transition in Strained Ultrathin Manganite Heterostructures (2021)
  • Author(s): M. Kobayashi, L. D. Anh, M. Suzuki, Y. Takeda, S.-i. Fujimori, M. Tanaka, S. Ohya, and A. Fujimori
  • Journal Title: Phys. Rev. Applied Volume: 15 Issue: 6 Pages: 064019-064019
  • DOI: 10.1103/physrevapplied.15.064019
  • Peer Reviewed
• [Journal Article] Wide-Range Epitaxial Strain Control of Electrical and Magnetic Properties in High-Quality SrRuO3 Films (2021)
  • Author(s): Y. K. Wakabayashi, S. Kaneta-Takada, Y. Krockenberger, Y. Taniyasu, and H. Yamamoto
  • Journal Title: ACS Applied Electronic Materials Volume: 3 Issue: 6 Pages: 2712-2719
  • DOI: 10.1021/acsaelm.1c00288
  • Peer Reviewed
• [Journal Article] High-mobility two-dimensional carriers from surface Fermi arcs in magnetic Weyl semimetal films (2021)
  • Author(s): Shingo Kaneta-Takada, Yuki K. Wakabayashi, Yoshiharu Krockenberger, Toshihiro Nomura, Yoshimitsu Kohama, Sergey A. Nikolaev, Hena Das, Hiroshi Irie, Kosuke Takiguchi, Shinobu Ohya, Masaaki Tanaka, Yoshitaka Taniyasu, Hideki Yamamoto
  • Journal Title: arXiv Volume: 2106.03292
  • Open Access
• [Presentation] ighly efficient spin-charge conversion induced by band crossing and spin-orbit interaction (2024)
  • Author(s): S. Kaneta-Takada, M. Tanaka, and S. Ohya
  • Organizer: 第15回低温科学研究センター研究交流会
• [Presentation] Efficient spin-orbit-torque single-layer magnetization switching in SrRuO3 induced by enhanced spin Berry curvature by oxygen octahedral rotation (2024)
  • Author(s): H. Horiuchi, Y. K. Wakabayashi, Y. Araki, J. Ieda, M. Yamanouchi, S. Kaneta-Takada, Y. Taniyasu, H. Yamamoto, Y. Krockenberger, M. Tanaka, and S. Ohya
  • Organizer: 第27回半導体スピン工学の基礎と応用
• [Presentation] Enhanced Magnetization and Change in Magnetic Anisotropy in La2/3Sr1/3MnO3 membranes Released from a Substrate (2024)
  • Author(s): T. Arai, S. Kaneta-Takada, L. D. Anh, M. Kobayashi, M. Tanaka, and S. Ohya
  • Organizer: 第27回半導体スピン工学の基礎と応用
• [Presentation] Enhanced Magnetization and Change in Magnetic Anisotropy in La0.67Sr0.33MnO3 membranes Released from a Substrate (2024)
  • Author(s): T. Arai, S. Kaneta-Takada, L. D. Anh, M. Kobayashi, M. Tanaka, and S. Ohya
  • Organizer: 第15回低温科学研究センター研究交流会
• [Presentation] Giant spin-valve effect and gate modulation in nano-channel oxide devices made using metal-insulator transition (2024)
  • Author(s): T. Endo, S. Tsuruoka, Y. Tadano, S. Kaneta-Takada, Y. Seki, M. Kobayashi, L. D. Anh, M. Seki, H. Tabata, M. Tanaka, and S. Ohya
  • Organizer: 強的秩序とその操作に関わる 第18回 講演会 ＆ 学術変革B 超軌道分裂による新奇巨大界面応答 第2回研究成果報告会
• [Presentation] Scattering-Dependent Transport of SrRuO3 Films: From Weyl Fermion Transport to Hump-Like Hall Effect Anomaly (2023)
  • Author(s): S. Kaneta-Takada, Y. K. Wakabayashi, Y. Krockenberger, H. Irie, S. Ohya, M. Tanaka, Y. Taniyasu, and H. Yamamoto
  • Organizer: 68th Annual Conference on Magnetism and Magnetic Materials 2023
  • Int'l Joint Research
• [Presentation] Enhancement of spin-to-charge conversion in SrRu1-xO3 films by Ru stoichiometry control (2023)
  • Author(s): S. Kaneta-Takada, Y. K. Wakabayashi, H. Shinya, Y. Taniyasu, H. Yamamoto, Y. Krockenberger, M. Tanaka, and S. Ohya
  • Organizer: 29th International Workshop on Oxide Electronics (iWOE-29)
  • Int'l Joint Research
• [Presentation] Alternation of Magnetic Anisotropy Accompanied by Metal-Insulator Transition in Strained Ultrathin Manganite Heterostructures (2023)
  • Author(s): M. Kobayashi, L. D. Anh, M. Suzuki, S. Kaneta-Takada, Y. Takeda, S. Fujimori, G. Shibata, A. Tanaka, M. Tanaka, S. Ohya, and A. Fujimori
  • Organizer: MRM2023/MRS-ICA2023 Ground Meeting
  • Int'l Joint Research
• [Presentation] High-mobility two-dimensional carriers from surface Fermi arcs in ferromagnetic Weyl semimetal SrRuO3 films (2023)
  • Author(s): Y. K. Wakabayashi, S. Kaneta-Takada, Y. Krockenberger, T. Nomura, Y. Kohama, H. Irie, K. Takiguchi, S. Ohya, M. Tanaka, Y. Taniyasu, and H. Yamamoto
  • Organizer: 2023 MRS fall meeting
  • Int'l Joint Research
• [Presentation] Significant Reduction of Dead Layers and Magnetic Anisotropy Change in a Strain-Free Transferred La2/3Sr1/3MnO3 Thin Film on a Si Substrate (2023)
  • Author(s): T. Arai, S. Kaneta-Takada, L. D. Anh, M. Kobayashi, M. Onodera, R. Moriya, T. Machida, M. Tanaka, and S. Ohya
  • Organizer: 68th Annual Conference on Magnetism and Magnetic Materials 2023
  • Int'l Joint Research
• [Presentation] Enhancement in Magnetization and Perpendicular Magnetic Anisotropy in a La2/3Sr1/3MnO3 Thin Film Released from a SrTiO3 Substrate (2023)
  • Author(s): T. Arai, S. Kaneta-Takada, L. D. Anh, M. Kobayashi, M. Onodera, K. Kinoshita, R. Moriya, T. Machida, M. Tanaka, and S. Ohya
  • Organizer: 29th International Workshop on Oxide Electronics (iWOE-29)
  • Int'l Joint Research
• [Presentation] Atomically flat SnTe(001) thin films made by the room temperature wetting layer method and its electrical transport properties (2023)
  • Author(s): R. Akiyama, S. Kaneta-Takada, S. Ohya, S. Shimizu, H. Horiuchi and S. Hasegawa
  • Organizer: International conference on complex orders in condensed matter aperiodic order, local order, electronic order, hidden order
  • Int'l Joint Research
• [Presentation] Giant spin-valve effect and FET operation in nano-channel oxide devices made using metal-insulator transition (2023)
  • Author(s): T. Endo, S. Tsuruoka, Y. Tadano, S. Kaneta-Takada, Y. Seki, M. Kobayashi, L. D. Anh, M. Seki, H. Tabata, M. Tanaka, and S. Ohya
  • Organizer: 29th International Workshop on Oxide Electronics (iWOE-29)
  • Int'l Joint Research
• [Presentation] Ru組成の異なるSrRuO3およびSrRu0.7O3薄膜におけるスピン流-電流変換効率の比較 (2023)
  • Author(s): 金田真悟、若林勇希、新屋ひかり、谷保芳孝, 山本秀樹、ヨシハルクロッケンバーガー、田中雅明、大矢忍
  • Organizer: 強的秩序とその操作に関わる第17回夏の学校
• [Presentation] Influence of the Ru composition change on the spin-to-charge conversion in SrRu1-xO3 films (2023)
  • Author(s): S. Kaneta-Takada, Y. K. Wakabayashi, Y. Taniyasu, H. Yamamoto, Y. Krockenberger, H. Shinya, M. Tanaka, and S. Ohya
  • Organizer: 令和5年第84回応用物理学会秋季学術講演会
• [Presentation] Scattering-dependent transport of SrRuO3 films: From Weyl fermion transport to hump-like Hall effect anomaly (2023)
  • Author(s): S. Kaneta-Takada, Y. K. Wakabayashi, Y. Krockenberger, H. Irie, S. Ohya, M. Tanaka, Y. Taniyasu, and H. Yamamoto
  • Organizer: 令和5年第84回応用物理学会秋季学術講演会
• [Presentation] Single-layer spin-orbit torque magnetization switching in high-quality ferromagnetic Weyl semimetal SrRuO3 (2023)
  • Author(s): H. Horiuchi, Y. K. Wakabayashi, S. Kaneta-Takada, Y. Taniyasu, H. Yamamoto, Y. Krockenberger, M. Tanaka, and S. Ohya
  • Organizer: 令和5年第84回応用物理学会秋季学術講演会
• [Presentation] 探針制御用走査電子顕微鏡を備えたin situ 4探針電気伝導測定装置によるSrTiO3表面上の原子層構造の測定 (2023)
  • Author(s): 清水翔太、保原麗、秋山了太、堀内皓斗、金田真悟、大矢忍、長谷川修司
  • Organizer: 本表面真空学会2023年度関東支部講演大会
• [Presentation] Giant spin-charge conversion in an all-epitaxial single-crystal-oxide Rashba LaTiO3+δ/SrTiO3 heterostructure (2023)
  • Author(s): S. Kaneta-Takada, M. Kitamura, S. Arai, T. Arai, R. Okano, L. D. Anh, T. Endo, K. Horiba, H. Kumigashira, M. Kobayashi, M. Seki, H. Tabata, M. Tanaka and S. Ohya
  • Organizer: American Physical Society (APS) March Meeting 2023
  • Int'l Joint Research
• [Presentation] Giant spin-to-charge conversion in a (La,Sr)MnO3/LaTiO3+δ/SrTiO3 single-crystalline epitaxial heterostructure (2023)
  • Author(s): S. Kaneta-Takada, M. Kitamura, S. Arai, T. Arai, R. Okano, L. D. Anh, T. Endo, K. Horiba, H. Kumigashira, M. Kobayashi, M. Seki, H. Tabata, M. Tanaka and S. Ohya
  • Organizer: 強的秩序とその操作に関わる研究グループ第16回講演会
• [Presentation] Change of the band structure in a freestanding La0.67Sr0.33MnO3 thin film (2023)
  • Author(s): T. Arai, S. Kaneta-Takada, L. D. Anh, M. Kobayashi, M. Tanaka, and S. Ohya
  • Organizer: 令和5年第70回応用物理学会春季学術講演会
• [Presentation] Gate modulation of current in the metal-insulator transition region La0.67Sr0.33MnO3 (2023)
  • Author(s): T. Endo, S. Tsuruoka, Y. Tadano, S. Kaneta-Takada, L. D. Anh, M. Tanaka, and S. Ohya
  • Organizer: 令和5年第70回応用物理学会春季学術講演会
• [Presentation] 強相関金属を用いた単結晶酸化物ラシュバ界面における巨大スピン流電流変換 (2023)
  • Author(s): 金田真悟, 北村未歩, 荒井勝真, 新居 拓眞、 岡野諒, レデゥックアイン,遠藤達朗, 堀場弘司, 組頭広志, 小林正起, 関宗俊, 田畑仁, 田中雅明, 大矢忍
  • Organizer: Spin-RNJ Symposium 2022
• [Presentation] Nanoscale metal-insulator transition of La0.67Sr0.33MnO3 and its application to two-terminal spin-valve devices and spin MOSFET (2023)
  • Author(s): T. Endo, S. Tsuruoka, Y. Tadano, S. Kaneta-Takada, L. D. Anh, M. Tanaka, and S. Ohya
  • Organizer: Spin-RNJ Symposium 2022
• [Presentation] 探針制御用走査電子顕微鏡を備えたin situ4探針電気伝導測定装置によるSrTiO3上の原子層構造の測定 (2023)
  • Author(s): 清水翔太、保原麗、秋山了太、堀内皓斗、金田真悟、大矢忍、長谷川修司
  • Organizer: 第14回低温科学研究センター研究交流会
• [Presentation] Gate modulation of the spin-dependent transport in the metal-insulator transition region of La0.67Sr0.33MnO3-baesd spin-MOSFET structure (2023)
  • Author(s): T. Endo, S. Tsuruoka, Y. Tadano, S. Kaneta-Takada, L. D. Anh, M. Tanaka, and S. Ohya
  • Organizer: 第14回低温科学研究センター研究交流会
• [Presentation] Change of the band structure in a freestanding La0.67Sr0.33MnO3 thin film (2023)
  • Author(s): T. Arai, S. Kaneta-Takada, L. D. Anh, M. Kobayashi, M. Tanaka, and S. Ohya
  • Organizer: 第14回低温科学研究センター研究交流会
• [Presentation] Giant Spin-charge Conversion in an All-epitaxial Single-crystal-oxide rashba LaTiO3+δ/SrTiO3 heterostructure (2022)
  • Author(s): S. Kaneta-Takada, M. Kitamura, S. Arai, R. Okano, L. D. Anh, T. Endo, K. Horiba, H. Kumigashira, M. Kobayashi, M. Seki, H. Tabata, M. Tanaka and S. Ohya
  • Organizer: International Conference on Molecular Beam Epitaxy (ICMBE2022)
  • Int'l Joint Research
• [Presentation] Giant Spin-valve Effect in Oxide-based Lateral Nano-scale Channel Devices (2022)
  • Author(s): T. Endo, S. Tsuruoka, S. Kaneta-Takada, L. D. Anh, S. Ohya, and M. Tanaka
  • Organizer: The 67th Annual Conference on Magnetism and Magnetic Materials (MMM 2022)
  • Int'l Joint Research / Invited
• [Presentation] Growth of atomically flat SnTe (001) thin films using the room temperature wetting layer method and its electrical transport measurements (2022)
  • Author(s): R. Akiyama, S. Kaneta-Takada, S. Ohya, S. Shimizu, H. Horiuchi, T. Takashiro, and S. Hasegawa
  • Organizer: The 22nd International Vacuum Congress (IVC-22)
  • Int'l Joint Research
• [Presentation] マンガン酸化物極薄膜ヘテロ構造における金属絶縁体転移に伴う磁気異方性の変化 (2022)
  • Author(s): 小林正起、L. D. Anh, 鈴木雅弘、金田真悟、竹田幸治、藤森伸一、芝田悟朗、田中新、田中雅明、大矢忍、藤森淳
  • Organizer: 令和4年第83回応用物理学会秋季学術講演会
• [Presentation] Giant Spin-Valve Effect in Planar Nano-Channel Devices with Ferromagnetic Oxides (2022)
  • Author(s): T. Endo, S. Tsuruoka, S. Kaneta-Takada, L. D. Anh, M. Tanaka, and S. Ohya
  • Organizer: 令和4年第83回応用物理学会秋季学術講演会
• [Presentation] マンガン酸化物極薄膜ヘテロ構造における金属絶縁体転移に伴う磁気異方性の変化 (2022)
  • Author(s): 小林正起、L. D. Anh, 鈴木雅弘、金田真悟、竹田幸治、藤森伸一、芝田悟朗、田中新、田中雅明、大矢忍、藤森淳
  • Organizer: 日本物理学会
• [Presentation] Giant spin-to-charge conversion in an all-epitaxial single-crystal-oxide Rashba LaTiO3+δ/SrTiO3 heterostructure (2022)
  • Author(s): Shingo Kaneta-Takada, Miho Kitamura, Shoma Arai, Takuma Arai, Ryo Okano, Le Duc Anh, Tatsuro Endo, Koji Horiba, Hiroshi Kumigashira, Masaki Kobayashi, Munetoshi Seki, Hitoshi Tabata, Masaaki Tanaka, Shinobu Ohya
  • Organizer: 第69回応用物理学会春季学術講演会
• [Presentation] Quantum limit transport and Two-dimensional Weyl fermions in epitaxial ferromagnetic oxide SrRuO3 thin films (2022)
  • Author(s): S. Kaneta-Takada, Y. K. Wakabayashi, Y. Krockenberger, T. Nomura, Y. Kohama, Hiroshi Irie, K. Takiguchi, S. Ohya, M. Tanaka, Y. Taniyasu, and H. Yamamoto
  • Organizer: 第69回応用物理学会春季学術講演会
  • Invited
• [Presentation] オールエピタキシャル単結晶LaTiO3+δ/SrTiO3ラシュバヘテロ構造における巨大スピン流電流変換 (2022)
  • Author(s): 田真悟, 北村未歩, 荒井勝真, 新居 拓眞、 岡野諒, レデゥックアイン,遠藤達朗, 堀場弘司, 組頭広志, 小林正起, 関宗俊, 田畑仁, 田中雅明, 大矢忍
  • Organizer: 第13回低温科学研究センター研究交流会
• [Presentation] Influence of the multi-orbital hybridizations on the spin-to-charge conversion at the LaAlO3/SrTIO3 interface (2022)
  • Author(s): 荒井勝真, 金田真悟, L. D. Anh, 田中雅明, 大矢忍
  • Organizer: 第69回応用物理学会春季学術講演会
• [Presentation] 有効強束縛近似法を用いたLaAlO3/SrTiO3界面における逆エデルシュタイン効果の理論解析: dxy量子化サブバンドの重要な役割 (2022)
  • Author(s): 荒井勝真, 金田真悟, L. D. Anh, 田中雅明, 大矢忍
  • Organizer: 強的秩序とその操作に関わる研究グループ第14回
• [Presentation] SrTiO3(001)基板上への室温ウェッティングレイヤー成長法による超平坦SnTe(001)薄膜の成長と電気伝導評価 (2022)
  • Author(s): 秋山了太, 金田真悟, 大矢忍, 高城拓也, 長谷川修司
  • Organizer: 2022年春季日本物理学会年次大会
• [Presentation] Influence of the multi-orbital hybridizations on the spin-to-charge conversion at the LaAlO3 / SrTiO3 interface (2022)
  • Author(s): 荒井勝真, 金田真悟, Le. Duc. Anh, 田中雅明, 大矢忍
  • Organizer: 第13回低温科学研究センター交流会
• [Presentation] Giant spin-charge conversion in an all-epitaxial LaTiO3+δ/SrTiO3 heterostructure (2022)
  • Author(s): S. Kaneta-Takada, M. Kitamura, S. Arai, R. Okano, L. D. Anh, T. Endo, K. Horiba, H. Kumigashira, M. Kobayashi, M. Seki, H. Tabata, M. Tanaka and S. Ohya
  • Organizer: 2022 Joint MMM-INTERMAG
  • Int'l Joint Research
• [Presentation] Quantum limit transport and Two-dimensional Weyl fermions in epitaxial ferromagnetic oxide SrRuO3 thin films (2021)
  • Author(s): S. Kaneta-Takada, Y. K. Wakabayashi, Y. Krockenberger, T. Nomura, Y. Kohama, Hiroshi Irie, K. Takiguchi, S. Ohya, M. Tanaka, Y. Taniyasu, and H. Yamamoto
  • Organizer: 第82回応用物理学会秋季学術講演会
• [Presentation] Theoretical analysis of the inverse Edelstei neffect at the LaAlO3/SrTiO3 interface with an effective tight-binding model: Important role of the seccond dxy subband (2021)
  • Author(s): S. Arai, S. Kaneta-Takada, L. D. Anh, M. Tanaka, and S. Ohya
  • Organizer: 第26回半導体スピン工学の基礎と応用
• [Presentation] Realization of vertical p-i-n junctions composed of a two dimensional hole gas region at an FeOx/SrTiO3 interface, SrTiO3, and Nb:SrTiO3 (2021)
  • Author(s): C. Xia, L. D. Anh, S. Kaneta-Takada, M. Tanaka, and S. Ohya
  • Organizer: 第82回応用物理学会秋季学術講演会
• [Presentation] 高品質SrRuO3薄膜における大きなエピタキシャル歪みによる電気、磁気特性の制御 (2021)
  • Author(s): 若林勇希, 金田真悟, ヨシハルクロッケンバーガー, 谷保芳孝, 山本秀樹
  • Organizer: 第82回応用物理学会秋季学術講演会
• [Presentation] エピタキシャルSrRuxO3(x = 0.7 and 1)薄膜でのオフストイキオメトリーの結晶構造、電気伝導特性への影響 (2021)
  • Author(s): 若林勇希, 金田真悟, ヨシハルクロッケンバーガー, 大矢忍, 田中雅明, 谷保芳孝, 山本秀樹
  • Organizer: 第82回応用物理学会秋季学術講演会
• [Presentation] Quantum Limit Transport and Two-dimensional Weyl Fermions in Epitaxial Ferromagnetic Oxide SrRuO3 Thin Films (2021)
  • Author(s): S. Kaneta-Takada, Y. K. Wakabayashi, Y. Krockenberger, S. Ohya, M. Tanaka, Y. Taniyasu, and H. Yamamoto
  • Organizer: International Symposium on Novel maTerials and quantum Technologies (ISNTT2021)
  • Int'l Joint Research
• [Presentation] Field effect transistor based on two-dimensional carrier gas at the FeOy/SrTiO3 interface (2021)
  • Author(s): L. D. Anh, T. J. Wijaya, S. Kaneta-Takada, M. Seki, H. Tabata, M. Tanaka, and S. Ohya
  • Organizer: 20th International Conference on Modulated Semiconductor Structures (MSS-20)
  • Int'l Joint Research
• [Presentation] Ambipolar control of high-mobility carriers at a wide-gap oxide interface and applications towards oxide-based electronics (2021)
  • Author(s): L. D. Anh, S. Kaneta-Takada, T. J. Wijaya, H. Shinya, T. Fukushima, A. Masago, H. Katayama-Yoshida, M. Tokunaga, M. Kobayashi, M. Seki, H. Tabata, M. Tanaka, and S. Ohya
  • Organizer: International Workshop on Oxide Electronics 27th (iWOE27)
  • Int'l Joint Research / Invited