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Theoretical research for microscopic understanding and visualization of the spin Seebeck effect

Research Project

Project/Area Number 15K05151
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Condensed matter physics II
Research InstitutionOkayama University (2016-2018)
Japan Atomic Energy Agency (2015)

Principal Investigator

ADACHI Hiroto  岡山大学, 異分野基礎科学研究所, 准教授 (10397903)

Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywordsスピンゼーベック効果 / スピン流 / 熱流 / マグノン / 熱電発電 / スピン波 / スピンホール効果
Outline of Final Research Achievements

Spin Seebeck effect refers to the generation of spin current by a heat current applied to a magnet. In this project, we have theoretically investigated the spin Seebeck effect near the magnetic phase transition point. By means of a model calculation using a time-dependent Ginzburg-Landau equation, we have shown that in both ferromagnets and antiferromagnets, the spin Seebeck effect signal is proportional to the magnetization in the sample.

Academic Significance and Societal Importance of the Research Achievements

本研究課題で対象とするスピンゼーベック効果は、磁性体の熱エネルギーから非磁性体にスピン流を注入する現象であり、2008年に日本で発見されて以降、新しく簡便なスピン流の生成手法として大変大きな注目を集めている。この現象の磁気転移点近傍での振る舞いを明らかとすることは、学術的には、スピンゼーベック効果に対する我々の理解が正しいか否かの一つの判定基準となる。また応用上でも、スピンゼーベック効果を高温領域で使用する際のデバイスの設計指針を与えることに繋がる。このように、本研究課題で明らかとした磁気転移点近傍でのスピンゼーベック効果の振る舞いは極めて大きな意義を持っている。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (23 results)

All 2018 2017 2016 2015 Other

All Int'l Joint Research (3 results) Journal Article (8 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 8 results,  Acknowledgement Compliant: 3 results,  Open Access: 1 results) Presentation (11 results) (of which Int'l Joint Research: 5 results,  Invited: 4 results) Remarks (1 results)

  • [Int'l Joint Research] City University of New York/Queens College(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Zaragoza University(Spain)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] Johannes Gutenberg-University Mainz/Technische Universitaet Muenchen(Germany)

    • Related Report
      2015 Research-status Report
  • [Journal Article] Spin diffusion equation in superconductors in the vicinity of Tc2018

    • Author(s)
      Taira Takuya、Ichioka Masanori、Takei So、Adachi Hiroto
    • Journal Title

      Physical Review B

      Volume: 98 Issue: 21

    • DOI

      10.1103/physrevb.98.214437

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Spin Seebeck effect in a simple ferromagnet near T c: a Ginzburg-Landau approach2018

    • Author(s)
      Adachi Hiroto, Yamamoto Yutaka, Ichioka Masanori
    • Journal Title

      Journal of Physics D: Applied Physics

      Volume: 51 Issue: 14 Pages: 144001-144001

    • DOI

      10.1088/1361-6463/aab1d1

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Spin pumping into superconductors: A new probe of spin dynamics in a superconducting thin film2017

    • Author(s)
      Masashi Inoue, Masanori Ichioka, and Hiroto Adachi
    • Journal Title

      Physical Review B

      Volume: 96 Issue: 2

    • DOI

      10.1103/physrevb.96.024414

    • NAID

      120006376010

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Thermoelectric generation based on spin Seebeck effects2016

    • Author(s)
      K. Uchida, H. Adachi, T. Kikkawa, A. Kirihara, M. Ishida, S. Yorozu, S. Maekawa, and E. Saitoh
    • Journal Title

      Proceedings of the IEEE

      Volume: 印刷中 Issue: 10 Pages: 1946-1973

    • DOI

      10.1109/jproc.2016.2535167

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Origin of the spin Seebeck effect in compensated ferrimagnets2016

    • Author(s)
      S. Geprgs, A. Kehlberger, F. D. Coletta, Z. Qiu, E. J. Guo, T. Schulz, C. Mix, S. Meyer, A. Kamra, M. Althammer, H. Huebl, G. Jakob, Y. Ohnuma, H. Adachi, J. Barker, S. Maekawa, G. E. W. Bauer, E. Saitoh, R. Gross, S. T. B. Goennenwein, and M. Klaeui
    • Journal Title

      Nature Communications

      Volume: 7 Issue: 1 Pages: 10452-10452

    • DOI

      10.1038/ncomms10452

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Magnon instability driven by heat current in magnetic bilayers2015

    • Author(s)
      Y. Ohnuma, H. Adachi, E. Saitoh, and S. Maekawa
    • Journal Title

      Physical Review B

      Volume: 92 Issue: 22 Pages: 224404-224404

    • DOI

      10.1103/physrevb.92.224404

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Unconventional scaling and significant enhancement of the spin Seebeck effect in multilayers2015

    • Author(s)
      R. Ramos, T. Kikkawa, M. H. Aguirre, I. Lucas, A. Anadon, T. Oyake, K. Uchida, H. Adachi, J. Shiomi, P. A. Algarabel, L. Morellon, S. Maekawa, E. Saitoh, and M. R. Ibarra
    • Journal Title

      Physical Review B

      Volume: 92 Issue: 22 Pages: 220407-220407

    • DOI

      10.1103/physrevb.92.220407

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Theory of unidirectional spin heat conveyer2015

    • Author(s)
      H. Adachi and S. Maekawa
    • Journal Title

      Journal of Applied Physics

      Volume: 117 Issue: 17

    • DOI

      10.1063/1.4908019

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Spin pumping/Seebeck effect across a phase transition point2018

    • Author(s)
      H. Adachi, Y. Yamamoto, T. Taira. M. Inoue, and M. Ichioka
    • Organizer
      Spin Caloritronics IX
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 強磁性キュリー点近傍におけるスピンゼーベック効果2018

    • Author(s)
      山本督, 市岡優典, 安立裕人
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 超伝導体におけるスピン拡散方程式:Tc近傍の解析2018

    • Author(s)
      平拓也, 市岡優典, 安立裕人
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Theory of spin pumping into superconductors2018

    • Author(s)
      Hiroto Adachi, Masashi Inoue, Masanori Ichioka
    • Organizer
      New Excitations in Spintronics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Spin pumping into superconductors2017

    • Author(s)
      Hiroto Adachi, Masashi Inoue, Masanori Ichioka
    • Organizer
      9th International School and Conference on Spintronics and Quantum Information Technology
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 超伝導体へのスピンポンピングの理論2017

    • Author(s)
      井上優志, 安立裕人, 市岡優典
    • Organizer
      日本物理学会第72回年次大会 大阪大学(豊中)
    • Related Report
      2017 Research-status Report
  • [Presentation] 超伝導体へのスピンポンピングの理論2017

    • Author(s)
      井上優志、安立裕人、市岡優典
    • Organizer
      日本物理学会 第72回年次大会
    • Place of Presentation
      大阪大学豊中キャンパス
    • Related Report
      2016 Research-status Report
  • [Presentation] Spin pumping into superconductors2016

    • Author(s)
      Masashi Inoue, Hiroto Adachi, and Masanori Ichioka
    • Organizer
      International School on Spintronics & Spin-Orbitronics
    • Place of Presentation
      Kyushu University, Fukuoka
    • Year and Date
      2016-12-16
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] スピンゼーベック効果によるスピン流生成2016

    • Author(s)
      安立裕人
    • Organizer
      第一回ディラック電子系マルチフェロイクス研究会
    • Place of Presentation
      東京理科大学 神楽坂キャンパス(東京都 新宿区)
    • Year and Date
      2016-01-28
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Theory of spin Seebeck effect in magnetic multilayers2015

    • Author(s)
      Hiroto Adachi
    • Organizer
      Magnetics and Optics Research International Symposium (Moris 2015)
    • Place of Presentation
      Penang, Malaysia
    • Year and Date
      2015-11-30
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 多層膜構造における巨大スピンゼーベック効果:理論2015

    • Author(s)
      安立裕人
    • Organizer
      日本物理学会2015年秋季大会
    • Place of Presentation
      関西大学 千里山キャンパス(大阪府 吹田市)
    • Year and Date
      2015-09-16
    • Related Report
      2015 Research-status Report
  • [Remarks]

    • URL

      http://orcid.org/0000-0002-6844-6477

    • Related Report
      2017 Research-status Report

URL: 

Published: 2015-04-16   Modified: 2020-05-15  

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