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Elucidation and control of nanoscale thermal transport in spin caloritronics

Research Project

Project/Area Number 22K20495
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0402:Nano/micro science, applied condensed matter physics, applied physics and engineering, and related fields
Research InstitutionNational Institute for Materials Science

Principal Investigator

HIRAI Takamasa  国立研究開発法人物質・材料研究機構, 磁性・スピントロニクス材料研究センター, 研究員 (30949863)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsスピンカロリトロニクス / 熱伝導 / 時間領域サーモリフレクタンス / スピン流 / 熱電変換 / 金属人工格子 / 磁性薄膜 / マグノン / スピントロニクス / 熱工学
Outline of Research at the Start

本研究の目的は、スピントロニクスと熱工学の融合研究領域:スピンカロリトロニクスにおいて未発展な、ナノスケール領域および界面におけるスピンを介した“熱エネルギー伝導”を解明し、その原理に基づく新奇熱制御機能を開拓することにある。外場の印加を可能とし、測定温度が可変な光学的熱伝導率計測系を構築し、コンビナトリアル物質設計に基づいたハイスループットな磁性・スピントロニクス材料の熱伝導計測を行うことで、スピンを利用した熱伝導制御研究をスピンカロリトロニクスにおいて主流な電流/スピン流⇔熱流の相互変換現象の物性探索研究に比肩するものへと押し上げる。

Outline of Final Research Achievements

In this study, we have constructed a unique thermal conductivity measurement system that allows to change the measurement temperature and apply an external field, aiming to create a new functionality to control thermal energy by interfusing spin caloritronics and thermal transport in solids: heat conduction. The following results were obtained through the thermal conductivity measurements mainly by focusing on the interface control of magnetic ultrathin films. (1) Demonstration of spin current-mediated control of nanoscale thermal transport at room temperature, (2) Establishment of a high-throughput material exploration for transverse magneto-thermoelectric conversion and demonstration of its zero-field-operation, (3) Observation of reducing the thermal conductivity in Fe/Pt metallic superlattices and quantitative evaluation of dimensionless figure of merit for transverse thermoelectric conversion.

Academic Significance and Societal Importance of the Research Achievements

本研究では、スピントロニクス材料の熱伝導率の汎用性の高い計測・評価法を確立し、スピンカロリトロニクスでは未開拓であった磁性/スピンを利用した熱輸送制御機能の創出に先鞭をつけることに成功した。本研究成果を基盤として、電子・フォノン・スピンなど複数の熱キャリアによって媒介される熱伝導の物理描像の総合的な理解の進展や更なる新たな熱伝導制御機能の開拓、それらに最適な物質探索の活性化などに結び付く可能性があり、学術的・社会的意義は極めて大きい。

Report

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

    (13 results)

All 2024 2023 2022

All Journal Article (8 results) (of which Peer Reviewed: 8 results,  Open Access: 3 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 3 results)

  • [Journal Article] Bipolarity of large anomalous Nernst effect in Weyl magnet-based alloy films2024

    • Author(s)
      Noguchi Shun、Fujiwara Kohei、Yanagi Yuki、Suzuki Michi-To、Hirai Takamasa、Seki Takeshi、Uchida Ken-ichi、Tsukazaki Atsushi
    • Journal Title

      Nature Physics

      Volume: 20 Issue: 2 Pages: 254-260

    • DOI

      10.1038/s41567-023-02293-z

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quantitative measurement of figure of merit for transverse thermoelectric conversion in Fe/Pt metallic multilayers2024

    • Author(s)
      Yamazaki Takumi、Hirai Takamasa、Yagi Takashi、Yamashita Yuichiro、Uchida Ken-ichi、Seki Takeshi、Takanashi Koki
    • Journal Title

      Physical Review Applied

      Volume: 21 Issue: 2 Pages: 024039-024039

    • DOI

      10.1103/physrevapplied.21.024039

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Creation of flexible spin-caloritronic material with giant transverse thermoelectric conversion by nanostructure engineering2024

    • Author(s)
      Gautam Ravi、Hirai Takamasa、Alasli Abdulkareem、Nagano Hosei、Ohkubo Tadakatsu、Uchida Ken-ichi、Sepehri-Amin Hossein
    • Journal Title

      Nature Communications

      Volume: 15 Issue: 1

    • DOI

      10.1038/s41467-024-46475-6

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Seebeck-driven transverse thermoelectric generation in magnetic hybrid bulk materials2023

    • Author(s)
      W. Zhou, A. Miura, T. Hirai, Y. Sakuraba, and K. Uchida
    • Journal Title

      Applied Physics Letters

      Volume: 122 Issue: 6 Pages: 062402-062402

    • DOI

      10.1063/5.0126870

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Elastocaloric effect of shape memory polymers in elastic response regime2023

    • Author(s)
      Hirai Takamasa、Uto Koichiro、Ebara Mitsuhiro、Uchida Ken-ichi
    • Journal Title

      Journal of Physics: Energy

      Volume: 5 Issue: 3 Pages: 034011-034011

    • DOI

      10.1088/2515-7655/ace7f3

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Observation of the Anisotropic Magneto-Thomson Effect2023

    • Author(s)
      Modak Rajkumar、Hirai Takamasa、Mitani Seiji、Uchida Ken-ichi
    • Journal Title

      Physical Review Letters

      Volume: 131 Issue: 20

    • DOI

      10.1103/physrevlett.131.206701

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Observation of the giant magneto-Seebeck effect in a metastable Co50Fe50/Cu multilayer2022

    • Author(s)
      Hirai Takamasa、Sakuraba Yuya、Uchida Ken-ichi
    • Journal Title

      Applied Physics Letters

      Volume: 121 Issue: 16 Pages: 162404-162404

    • DOI

      10.1063/5.0118382

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Sm-Co-based amorphous alloy films for zero-field operation of transverse thermoelectric generation2022

    • Author(s)
      Modak Rajkumar、Sakuraba Yuya、Hirai Takamasa、Yagi Takashi、Sepehri-Amin Hossein、Zhou Weinan、Masuda Hiroto、Seki Takeshi、Takanashi Koki、Ohkubo Tadakatsu、Uchida Ken-ichi
    • Journal Title

      Science and Technology of Advanced Materials

      Volume: 23 Issue: 1 Pages: 767-782

    • DOI

      10.1080/14686996.2022.2138538

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] スピントロニクス材料におけるナノスケール熱伝導計測2023

    • Author(s)
      平井孝昌
    • Organizer
      第1回 光・熱・電気と磁気の相互作用の活用技術調査専門委員会 研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] スピントロニクス材料におけるナノスケール熱伝導計測と制御2023

    • Author(s)
      平井孝昌
    • Organizer
      ナノスケールソフト磁性体の創製とデバイス応用調査専門委員会 第3回ナノ磁性研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Spin-current-induced non-equilibrium change in thermal conductivity and interfacial thermal resistance at room temperature2023

    • Author(s)
      T. Hirai, T. Morita, S., Biswas, J. Uzuhashi, T. Yagi, Y. Yamashita, K. Varun, R. Modak, Y. Sakuraba, T. Ohkubo, R. Guo, B. Xu, J. Shiomi, D. Chiba, and K. Uchida
    • Organizer
      第84回応用物理学会秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Active and selective temperature control using mechanical strain2023

    • Author(s)
      Takamasa Hirai
    • Organizer
      第47回日本磁気学会学術講演会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Flexible Elastocaloric Kirigami Temperature Modulator2023

    • Author(s)
      T. Hirai, R. Iguchi, A. Miura, K. Uto, M. Ebara, and K. Uchida
    • Organizer
      MRM2023/IUMRS-ICA2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research

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Published: 2022-09-01   Modified: 2025-01-30  

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