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Design of high performance thermoelectric material in topological magnets

Research Project

Project/Area Number 22K14587
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 29010:Applied physical properties-related
Research InstitutionKyoto University

Principal Investigator

Minami Susumu  京都大学, 工学研究科, 助教 (10876840)

Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Discontinued (Fiscal Year 2024)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2024: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2023: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords熱電効果 / トポロジカル磁性体 / 異常ネルンスト効果 / 第一原理計算 / 物質設計 / 異常ホール効果 / ベリー位相
Outline of Research at the Start

近年、新たな環境発電技術として異常ネルンスト効果が注目されている。異常ネルンスト効果は物質中の自発的な磁化により生じる熱電効果である。その起源の一つは物質中の電子波動関数のトポロジーにより特徴づけられるが、具体的な材料設計の指針を得るには至っていない。本研究ではトポロジカル磁性体に注目し第一原理計算による系統的な異常ネルンスト効果の評価を行い、環境発電デバイスへ応用可能な磁性材料の探索とその起源の解明を目指す。

Outline of Final Research Achievements

This research project aimed to explore materials with giant magneto-thermoelectric responses in topological magnets with non-trivial magnetic structures and to establish design principles based on electronic state analysis. We expanded our target materials from typical ferromagnets to topological antiferromagnets with non-coplanar spin structures. We identified candidate topological antiferromagnetic materials exhibiting spontaneous quantum transport phenomena by combining cluster multipole theory with first-principles calculations. Additionally, we conducted first-principles calculation analysis of anomalous Hall effect and anomalous Nernst effect using cluster multipole theory for transition metal dichalcogenides intercalated with magnetic transition metals, and clarified how spin chirality in non-coplanar spin structures influences these effects through electronic states.

Academic Significance and Societal Importance of the Research Achievements

本研究では非自明な磁気構造を持つトポロジカル磁性体における巨大磁気熱電応答材料の探索を行った。非共面スピン構造のスピンカイラリティが電子状態を通じて異常ホール効果・異常ネルンスト効果に寄与するメカニズムを第一原理解析に基づき解明した点で重要である。社会的意義としてハイスループット計算により同定されたトポロジカル反強磁性体の候補材料は排熱を有効活用するエネルギーハーベスティング技術の基盤として、省エネルギー社会の実現に貢献する可能性を持つ。
特に強磁性体より応用範囲の広い反強磁性体の活用は、次世代熱電変換デバイスの高効率化と小型化を促進し、持続可能なエネルギー利用に新たな可能性を示すものでである。

Report

(3 results)
  • 2024 Final Research Report ( PDF )
  • 2023 Annual Research Report
  • 2022 Research-status Report
  • Research Products

    (15 results)

All 2024 2023 2022

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (9 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] High-throughput calculations of antiferromagnets hosting anomalous transport phenomena2024

    • Author(s)
      Nomoto Takuya、Minami Susumu、Yanagi Yuki、Suzuki Michi-To、Koretsune Takashi、Arita Ryotaro
    • Journal Title

      Physical Review B

      Volume: 109 Issue: 9 Pages: 094435-094435

    • DOI

      10.1103/physrevb.109.094435

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Spontaneous topological Hall effect induced by non-coplanar antiferromagnetic order in intercalated van der Waals materials2023

    • Author(s)
      H. Takagi, R. Takagi, S. Minami, T. Nomoto, K. Ohishi, M.-T. Suzuki, Y. Yanagi, M. Hirayama, N. D. Khanh, K. Karube, H. Saito, D. Hashizume, R. Kiyanagi, Y. Tokura, R. Arita, T. Nakajima, S. Seki
    • Journal Title

      Nature Physics

      Volume: Advance online publications Issue: 7 Pages: 961-968

    • DOI

      10.1038/s41567-023-02017-3

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] First-principles calculation of anomalous Hall and Nernst conductivity by local Berry phase2023

    • Author(s)
      H. Sawahata, N. Yamaguchi, S. Minami, and F. Ishii
    • Journal Title

      Physical Review B

      Volume: 107 Issue: 2 Pages: 024404-024404

    • DOI

      10.1103/physrevb.107.024404

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Maximizing intrinsic anomalous Hall effect by controlling the Fermi level in simple Weyl semimetal films2022

    • Author(s)
      Mizuki Ohno, Susumu Minami, Yusuke Nakazawa, Shin Sato, Markus Kriener, Ryotaro Arita, Masashi Kawasaki, Masaki Uchida
    • Journal Title

      Physical Review B

      Volume: 105 Issue: 20

    • DOI

      10.1103/physrevb.105.l201101

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Optical anomalous Hall effect enhanced by flat bands in ferromagnetic van der Waals semimetal2022

    • Author(s)
      Kato Yoshihiro D.、Okamura Yoshihiro、Minami Susumu、Fujimura Reika、Mogi Masataka、Yoshimi Ryutaro、Tsukazaki Atsushi、Takahashi Kei S.、Kawasaki Masashi、Arita Ryotaro、Tokura Yoshinori、Takahashi Youtarou
    • Journal Title

      npj Quantum Materials

      Volume: 7 Issue: 1 Pages: 731-737

    • DOI

      10.1038/s41535-022-00482-2

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Giant and Robust Anomalous Nernst Effect in a Polycrystalline Topological Ferromagnet at Room Temperature2022

    • Author(s)
      Feng Zili、Minami Susumu、Akamatsu Shuhei、Sakai Akito、Chen Taishi、Nishio‐Hamane Daisuke、Nakatsuji Satoru
    • Journal Title

      Advanced Functional Materials

      Volume: 32 Issue: 49 Pages: 2206519-2206519

    • DOI

      10.1002/adfm.202206519

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 第一原理計算とワニエ模型に基づく磁気熱電材料の探索2023

    • Author(s)
      見波将, 是常隆, 野本拓也, 平山元昭, 嶋田隆広, 石井史之, 有田亮太郎
    • Organizer
      第 36 回計算力学講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 第一原理計算に基づく巨大磁気熱電材料の探索2023

    • Author(s)
      見波将, 是常隆, 平山元昭, 野本拓也, 嶋田隆広, 石井史之, 有田亮太郎
    • Organizer
      第 8 回マルチスケール材料力学 シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] 鉄二元系合金における異常ネルンスト効果の第一原理計算2023

    • Author(s)
      見波将, 石井史之, 野本拓也, 平山元昭, 嶋田隆広, 是常隆, 有田亮太郎
    • Organizer
      日本物理学会第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ワイル強磁性体Co2MnGa薄膜におけるトポロジカル電子構造に由来した横熱電応答の規則度依存性2023

    • Author(s)
      上杉良太, 肥後友也,, 見波将, 浜根大輔, 朱政, 朝倉海寛, 酒井明人, 大谷義近, 有田亮太郎, 中辻知
    • Organizer
      日本物理学会第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] フェリ磁性体GdCo2における磁気輸送特性2023

    • Author(s)
      松本卓也, 中村紘人, Yangming Wang, 見波将, 酒井明人, 中辻知
    • Organizer
      日本物理学会第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Topological Nernst effect in a chiral van der Waals magnet2023

    • Author(s)
      Nguyen Duy Khanh, Susumu Minami, Rinsuke Yamada, Takuya Nomoto, Daiki Yamaguchi, Shinichiro Seki, Yoshinori Tokura, Yasujiro Taguchi, Ryotaro Arita, Max Hirschberger
    • Organizer
      日本物理学会第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 低温異常ネルンスト効果測定による磁気トポロジカル状態の検証2023

    • Author(s)
      中村紘人, 小池祐樹, 見波将, 冨田崇弘, 小池美夏, M. Y. P. Akbar, A. A. Nugroho, 町田洋, 中辻知
    • Organizer
      日本物理学会2023年春季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Large anomalous Nernst effect in the iron-based Kagome ferromagnet Fe3Sn2022

    • Author(s)
      Susumu Minami, Akito Sakai, Taishi Chen, Yangming Wang, Zili Feng, Takuya Nomoto, Motoaki Hirayama, Rieko Ishii, Takashi Koretsune, Ryotaro Arita, Satoru Nakatsuji
    • Organizer
      The 15th Asia Pacific Physics Conference
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Logarithmic criticality in the transverse thermoelectric conductivity of the ferromagnetic topological semimetal CoMnSb2022

    • Author(s)
      Hiroto Nakamura, Susumu Minami, Takahiro Tomita, Agustinus Agung Nugroho, Satoru Nakatsuji
    • Organizer
      The 15th Asia Pacific Physics Conference
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2022-04-19   Modified: 2026-01-16  

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