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Spatial Surface State Tuning by Three-Dimensional Magnetic Topological Insulators

Research Project

Project/Area Number 21K13854
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 13010:Mathematical physics and fundamental theory of condensed matter physics-related
Research InstitutionNagoya University

Principal Investigator

Yano Rikizo  名古屋大学, 工学研究科, 助教 (80830356)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2022: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2021: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords磁性トポロジカル絶縁体 / トポロジカル半金属 / ワイル磁性半金属 / ノーダルライン半金属 / 表面状態制御 / 表面超伝導 / 単結晶育成 / 超伝導接合 / トポロジカル物質 / 異常ホール効果 / 磁性ワイル半金属 / ノーダルディラック半金属 / ゲート制御 / 物質探索 / マヨラナ粒子 / 超伝導近接効果 / 微細加工超伝導接合 / 表面・エッジ状態 / 磁気輸送特性
Outline of Research at the Start

本研究は自分自身が反粒子とされているマヨラナ粒子の実証に向けた基盤技術の確立を目指している。マヨラナ粒子はその存在自体が理論的な大きな注目を浴びているが、トポロジカル量子コンピュータへの応用も期待されている工学的にも重要な粒子であるが、この粒子の存在を確立させた実験がいまだない。そこで本研究は、特に磁性に注目し、このマヨラナ粒子の出現の制御や空間的な制御が可能な基盤技術の確立を目指している。
そのために、比較検証が可能な理想的物質の探索から始め、物質を組み合わせる接合技術の確立までを行う。とくに、三次元的に空間制御が可能な接合は難しく、その技術的開発に取り組んでいく。

Outline of Final Research Achievements

Topological materials are expected to have unique surface states, which can be applied to next-generation electronic devices, such as spintronics devices and future quantum computing. Although those surface states are topologically protected and robust against external fluctuation, they are potentially controlled by using magnetization. We focused on magnetically doped topological insulators (TIs) as a promising candidate material for this purpose and evaluated their surface state in detail. Although we did not reach the step of controlling the surface state by magnetization, we revealed detailed transport properties of the magnetic TI candidates and found other new candidates for magnetic topological semimetals, of which surface states may be controlled in the future. Furthermore, we found unconventional superconductivity on the surface of topological semimetals (nodal semimetal CaAg1-xPdxP).

Academic Significance and Societal Importance of the Research Achievements

本研究では将来的に表面状態制御を立体的な3次元空間で行える可能性のある物質の開拓に複数成功した。トポロジカル物質の表面状態は高速応答デバイスや、無散逸電流による極消費電力デバイスなどの応用が期待されいる。一方で、その堅牢な表面状態の制御方法について多くの課題が残されている。本研究では一つの解決策として物質の持つ磁化を制御することに着目した。結果としてその制御まで至らなかったものの、新たなトポロジカル物質候補の発見、トポロジカル物質での表面超伝導の発見などに至り、該当分野の新たな基礎学理への確立へ導く可能性があるという意味で重要な成果を得たと考えている。

Report

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

    (50 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (4 results) Journal Article (11 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 11 results,  Open Access: 8 results) Presentation (35 results) (of which Int'l Joint Research: 10 results,  Invited: 3 results)

  • [Int'l Joint Research] モスクワ物理工科大学(MITP)(ロシア連邦)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] トゥウェンテ大学(オランダ)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] モスクワ物理工科大学(MITP)(ロシア連邦)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] トゥウェンテ大学(オランダ)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Giant impurity effect on anomalous Hall effect of Mn3Sn2024

    • Author(s)
      Rikizo Yano, Shunya Kihara, Masayasu Yoneda, Huyen Thi Ngoc Vu, Hiroyuki Suto, Naoyuki Katayama, Takeo Yamaguchi, Makoto Kuwahara, Michi-To Suzuki, Koh Saitoh, and Satoshi Kashiwaya
    • Journal Title

      J. Chem. Phys.

      Volume: 160 Issue: 18 Pages: 184708-184708

    • DOI

      10.1063/5.0195211

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Transport Properties of Magnetically doped Topological Insulator Fe-BiSbTe2Se2023

    • Author(s)
      Tanda, R. Yano, H.T. Hirose, T. Sasagawa, and S. Kashiwaya
    • Journal Title

      PS Conf. Proc.

      Volume: 38 Pages: 11180-11180

    • DOI

      10.7566/jpscp.38.011180

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Andreev Bound States and Doppler Shift in La1.85Sr0.15CuO4/Au Junctions2023

    • Author(s)
      H. Teshima, K. Donguhn, T. Sakamori, R. Yano, Y. Hiramatsu, S. Tamura, K. Yada, Y. Tanaka, T. Sasagawa, and S. Kashiwaya
    • Journal Title

      PS Conf. Proc.

      Volume: 38 Pages: 11041-11041

    • DOI

      10.7566/jpscp.38.011041

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Two-Band Model and Point Contact Spectroscopy of Nodal-Line Semimetal CaAg0.9Pd0.1P2023

    • Author(s)
      N. Matsubara, S. Nagasaka, R. Yano, K. Saigusa, Y. Shinoda, Y. Okamoto, K. Takenaka, and S. Kashiwaya
    • Journal Title

      JPS Conf. Proc.

      Volume: 38 Pages: 11028-11028

    • DOI

      10.7566/jpscp.38.011028

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of Magnetic Field Induced by Broken Time-Reversal Symmetry Superconductors2023

    • Author(s)
      Mitsuhiro Teshigawara, Yasunori Mawatari, Hirotake Yamamori, Rikizo Yano, and Satoshi Kashiwaya
    • Journal Title

      JPS Conference Proceedings (Proc. LT 29)

      Volume: 38 Pages: 011069-011069

    • DOI

      10.7566/jpscp.38.011069

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Theory of Josephson current on a lattice model of grain boundary in d-wave superconductors2023

    • Author(s)
      T. Sakamori, S. Kashiwaya, R. Yano, Y. Tanaka, T. Hatano and K. Yada
    • Journal Title

      Supercond. Sci. Technol.

      Volume: 36 Issue: 8 Pages: 85011-85011

    • DOI

      10.1088/1361-6668/acdeaf

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evidence of unconventional superconductivity on the surface of the nodal semimetal CaAg1-xPdxP2023

    • Author(s)
      R. Yano, S. Nagasaka, N. Matsubara, K. Saigusa, T. Tanda, S. Ito, A. Yamakage, Y. Okamoto, K. Takenaka and S. Kashiwaya
    • Journal Title

      Nat. Commu.

      Volume: 14 Issue: 1 Pages: 6817-6817

    • DOI

      10.1038/s41467-023-42535-5

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Transport Properties of Magnetically doped Topological Insulator Fe-BiSbTe2Se2023

    • Author(s)
      Tsuyoshi Tanda, Rikizo Yano, Hishiro T. Hirose, Takao Sasagawa, and Satoshi Kashiwaya
    • Journal Title

      JPS Conf. Proc. : 29th International Conference on LOW TEMPERATURE PHYSICS

      Volume: -

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Two-Band Model and Point Contact Spectroscopy of Nodal-Line Semimetal CaAg0.9Pd0.1P2023

    • Author(s)
      Naoki Matsubara, Shota Nagasaka, Rikizo Yano, Kazushige Saigusa, Yusaku Shinoda, Yoshihiko Okamoto, Koshi Takenaka, and Satoshi Kashiwaya
    • Journal Title

      JPS Conf. Proc. : 29th International Conference on LOW TEMPERATURE PHYSICS

      Volume: -

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Andreev Bound States and Doppler Shift in La1.85Sr0.15CuO4/Au Junctions2023

    • Author(s)
      Hironori Teshima, Kang Donguhn, Takashi Sakamori, Rikizo Yano, Yuya Hiramatsu, Shun Tamura, Keiji Yada, Yukio Tanaka, Takao Sasagawa, Satoshi Kashiwaya
    • Journal Title

      JPS Conf. Proc. : 29th International Conference on LOW TEMPERATURE PHYSICS

      Volume: -

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Magnetic Gap of Fe-Doped BiSbTe2Se Bulk Single Crystals Detected by Tunneling Spectroscopy and Gate-Controlled Transports2021

    • Author(s)
      Rikizo Yano, Andrei Kudriashov, Hishiro T. Hirose, Taiki Tsuda, Hiromi Kashiwaya, Takao Sasagawa, Alexander A. Golubov, Vasily S. Stolyarov, Satoshi Kashiwaya
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 12 Issue: 17 Pages: 4180-4186

    • DOI

      10.1021/acs.jpclett.1c00869

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] トポロジカル絶縁体FeドープBiSbTe2Seの磁場中輸送特性と表面電子状態2023

    • Author(s)
      反田剛、矢野力三、谷口晴香、林時温、中河西翔、廣瀬陽代、笹川崇男、柏谷聡
    • Organizer
      日本物理学会第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 擬一次元構造を持つ遷移金属カルコゲナイドの単結晶育成と物性評価2023

    • Author(s)
      矢野力三、高橋智紀、奥田大貴、谷口晴香、笹川崇男、柏谷聡
    • Organizer
      日本物理学会第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 超伝導ノーダルライン半金属PdドープCaAgPへのトンネル分光2023

    • Author(s)
      松原直生, 長坂翔太, 矢野力三, 三枝一茂, 岡本佳比古, 竹中康司, 柏谷聡
    • Organizer
      日本物理学会第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Co2MnGaの異常ホール効果の結晶作製条件依存性2023

    • Author(s)
      岩瀬 勝彦、田口 勝久、柏谷 聡、矢野 力三
    • Organizer
      第84回応用物理学会秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 超伝導体における時間反転対称性の決定に向けたSQUID測定系の構築2023

    • Author(s)
      勅使河原 充洋、大野 誠、山森 弘毅、馬渡 康徳、矢野 力三、柏谷 聡
    • Organizer
      第84回応用物理学会秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 磁性体単結晶に着目した新奇電子機能の開拓2023

    • Author(s)
      矢野力三
    • Organizer
      2023年度NFRW・応用物理学会東海地区若手チャプタージョイントWS
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 超高速時間分解電子回折とシミュレーションによる超イオン導電体AgCrSe2の散漫散乱の研究2022

    • Author(s)
      千足勇介, 中村飛鳥, 下志万貴博, 古賀淳平, 矢野力三, 笹川崇男, 石坂香子
    • Organizer
      日本物理学会2022年秋季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 電界効果トランジスタ用いたキャリア注入による磁性トポロジカル絶縁体Fe-BiSbTe2Seの表面状態の探索2022

    • Author(s)
      反田剛, 矢野力三, 廣瀬陽代, 笹川崇男, 柏谷聡
    • Organizer
      日本物理学会2022年秋季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] ノーダルライン半金属CaAg0.9Pd0.1Pの超伝導へのポイントコンタクト2022

    • Author(s)
      松原直生, 長坂翔太, 矢野力三, 三枝一茂, 岡本佳比古, 竹中康司, 柏谷聡
    • Organizer
      日本物理学会2022年秋季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 波超伝導体の結晶粒界接合におけるジョセフソン電流の計算2022

    • Author(s)
      酒森貴史, 畑野敬史, 矢野力三, 田仲由喜夫, 柏谷聡, 矢田圭司
    • Organizer
      日本物理学会2022年秋季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 時間反転対称性の破れた超伝導から発生する磁場の空間分布2022

    • Author(s)
      勅使河原 充洋、馬渡 康徳、山森 弘毅、矢野 力三、柏谷 聡
    • Organizer
      022年第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Ionic-Liquid Gating of Magnetically doped Topological Insulator Fe-Doped BiSbTe2Se2022

    • Author(s)
      Tsuyoshi Tanda, Rikizo Yano, Hishiro T. Hirose, Takao Sasagawa, and Satoshi Kashiwaya
    • Organizer
      Conference on Low Temperature Physics (LT29)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Magnetically Doped Topological Insulator with High Bulk insulation and its Superconducting Proximity Effects2022

    • Author(s)
      Rikizo Yano, K.Tsumura, H. T. Hirose, T. Sasagawa, and S. Kashiwaya
    • Organizer
      Conference on Low Temperature Physics (LT29)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Andreev bound states and Doppler shift in La1.85Sr0.15CuO4/Au junctions2022

    • Author(s)
      Hironori Teshima, Kang Donguhn, Takashi Sakamori, Rikizo Yano, Yuya Hiramatsu, Shun Tamura, Keiji Yada, Yukio Tanaka, Takao Sasagawa, Satoshi Kashiwaya
    • Organizer
      Conference on Low Temperature Physics (LT29)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Point contact spectroscopy of superconducting nodal line semimetal CaAg0.9Pd0.1P2022

    • Author(s)
      Naoki Matsubara, Shota Nagasaka, Rikizo Yano, Kazushige Saigusa, Yusaku Shinoda, Yoshihiko Okamoto, Koshi Takenaka, and Satoshi Kashiwaya
    • Organizer
      Conference on Low Temperature Physics (LT29)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 物質材料研究から次の“常識”の創出へ~古くて新しい半導体材料からトポロジカル物質、超伝導材料まで~2022

    • Author(s)
      矢野力三
    • Organizer
      NF Tech フォーラム 2022冬 Online
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Magnetically Doped Three Dimensional Topological Insulator and its Superconducting Proximity Effects2021

    • Author(s)
      R. Yano, V. S. Stolyarov, H. T. Hirose ,K. Tsumura, M. Yamamoto, Y. Tanaka, H. Kashiwaya, Y. Asano, T. Sasagawa, S. Kashiwaya,
    • Organizer
      The 12th International Conference on the Science and Technology for Advanced Ceramics (STAC-12)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Field Emission from Topological Insulator BiSbTeSe22021

    • Author(s)
      Taiga Nagai, Hitoshi Nakahara, Rikizo Yano, Takao Sasagawa, and Satoshi Kashiwaya
    • Organizer
      The 12th International Conference on the Science and Technology for Advanced Ceramics (STAC-12)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Surface Transport Properties of Magnetically-Doped Three-Dimensional Topological Insulator Fe-BiSbTe2Se2021

    • Author(s)
      Tsuyoshi Tanda, Rikizo Yano, Hishiro T. Hirose, Takao Sasagawa, and Satoshi Kashiwaya
    • Organizer
      The 12th International Conference on the Science and Technology for Advanced Ceramics (STAC-12)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Anomalous Magnetic Transport Properties of AgCrSe2 Single Crystals2021

    • Author(s)
      Hiromi Goto, Rikizo Yano, Takao Sasagawa, and Satoshi Kashiwaya
    • Organizer
      The 12th International Conference on the Science and Technology for Advanced Ceramics (STAC-12)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Unusual Proximity Effect on a Magnetic Topological Insulator Tuned by Magnetization2021

    • Author(s)
      R. Yano, M. Yamamoto, K. Tsumura, H. T. Hirose , S. Tamura, H. Kashiwaya, V. S. Stolyarov, Y. Tanaka, T. Sasagawa, S. Kashiwaya
    • Organizer
      Bound states in hybrid superconductor nanostructures: CMD 29 online series (Jointly organized by the IOP and EPS)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Magnetically Doped Topological Insulator and its Superconducting Proximity Effects2021

    • Author(s)
      R. Yano, V. S. Stolyarov, H. T. Hirose, K. Tsumura, M. Yamamoto, H. Kashiwaya, T. Sasagawa, S. Kashiwaya
    • Organizer
      International Conference on Materials and Systems for Sustainability (ICMaSS2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] トポロジカル物質における新奇超伝導状態実現への取組み2021

    • Author(s)
      矢野力三,廣瀬陽代, V. Stolyarov ,前野悦輝, 岡本佳比古, 竹中康司, 田仲由喜夫, 笹川崇男, 柏谷聡
    • Organizer
      東海 NFRW・東海地区若手チャプタージョイントワークショップ
    • Related Report
      2021 Research-status Report
  • [Presentation] 磁性トポロジカル絶縁体における新奇な超伝導近接効果2021

    • Author(s)
      矢野力三
    • Organizer
      2021年度フロンティア材料研究所学術賞受賞記念講演会(研究奨励賞部門)
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Sr2RuO4/Nbジョセフソン接合の作製2021

    • Author(s)
      山田貴弘, 矢野力三, 米澤進吾, Shahbaz Anwar, 前野悦輝, 柏谷聡
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 磁性トポロジカル絶縁体接合における近接効果の磁気トラップを利用した制御2021

    • Author(s)
      矢野力三, 津村公平, 廣瀬陽代, Stolyarov Vasily, 柏谷裕美, 田仲由喜夫, 笹川崇男, 柏谷聡
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 磁性ドープ三次元トポロジカル絶縁体Fe-BiSbTe2Seの表面輸送特性2021

    • Author(s)
      反田剛, 矢野力三, 廣瀬陽代, 笹川崇男, 柏谷聡
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] AgCrSe2 単結晶における異常な磁気輸送特性2021

    • Author(s)
      後藤大望, 矢野力三, 笹川崇男, 柏谷聡
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Pd置換したノーダルライン半金属CaAgPにおける表面キャリア密度と超伝導2021

    • Author(s)
      長坂翔太, 矢野力三, 三枝一茂, 篠田祐作, 岡本佳比古, 竹中康司, 柏谷聡
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] トポロジカル絶縁体(BiSbTeSe2)からの電界放出2021

    • Author(s)
      永井 大賀、中原 仁、矢野 力三、笹川 崇男、柏谷 聡
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] トポロジカル絶縁体表面を介した超伝導近接効果の磁場応答2021

    • Author(s)
      矢野力三, 津村公平, 廣瀬陽代, Stolyarov Vasily, 田仲由喜夫, 笹川崇男, 柏谷聡
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] イオンゲートを用いた磁性トポロジカル絶縁体FeドープBiSbTe2Seの表面状態の制御2021

    • Author(s)
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Published: 2021-04-28   Modified: 2025-01-30  

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