• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Theory of transport properties in solids based on a microscopic fluid theory

Research Project

Project/Area Number 23K20826
Project/Area Number (Other) 21H01034 (2021-2023)
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeMulti-year Fund (2024)
Single-year Grants (2021-2023)
Section一般
Review Section Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

多々良 源  国立研究開発法人理化学研究所, 創発物性科学研究センター, チームリーダー (10271529)

Co-Investigator(Kenkyū-buntansha) Akosa Collins  早稲田大学, 理工学術院総合研究所(理工学研究所), 次席研究員(研究院講師) (10815822)
曲 冠雄  国立研究開発法人理化学研究所, 創発物性科学研究センター, 特別研究員 (00908527)
岸根 順一郎  放送大学, 教養学部, 教授 (80290906)
Project Period (FY) 2021-04-01 – 2025-03-31
Project Status Granted (Fiscal Year 2024)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2024: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2023: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2022: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2021: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Keywordsスピントロニクス / 電子流体 / スピン輸送 / 流体方程式 / スピンホール効果 / 有効ゲージ場 / マグノン / 電子物性 / 流体理論 / 磁性 / スピン起電力 / カイラリティ / 線形応答理論
Outline of Research at the Start

本研究では、様々な対称性を持つ物質の巨視的輸送特性を表す流体理論を微視的裏付けをもって場の理論的に構築し、ミクロからマクロまでをスムースにつなぐ物質の輸送特性の新しい記述の枠組みを提供する。それに基づきカイラル性極性などの特徴的な対称性を持つ電子系及びマグノン系に適用し特徴的な輸送特性を明らかにする。本研究の独自性創造性は、従来半古典近似によってのみ記述されてきた物質の流体理論を量子論の基盤の上に構築し直す点である。

Outline of Annual Research Achievements

伝導物質中の伝導電子を流体としてみたときに注目すべき量の1つが電子以外の場(粒子的な励起)により電子に作用する力である。こうした力は場の量子的な特性を反映したものになっており、電子の流体としてのまセミマクロな応答を理解する上で力の特定は重要な鍵となる。
2023年度は強磁性金属中の磁化に電子流体のゆらぎが及ぼす力を理論的に解析した。外的な要因での駆動がない平衡状態でも、電子系の熱や量子ゆらぎにより磁化には常にランダムな力が働いている。これをそのまま平均すれば0となり効果はないが、その2乗平均は有限で、これにより磁化はランダムウオークと同様の運動をする。
この場合に理論的に重要なことは、磁化のランダムウオークにスピン緩和(磁化のもつ角運動量の散逸)が必要かどうかである。磁化ダイナミクスの議論では50年ほど前にはじまる古典的現象論的な議論があり、スピン緩和があることで初めて磁化へのランダム力が発生し磁化の運動につながるとされていた。一方で伝導電子と磁化の相互作用を微視的レベルで見ると、角運動量を伴わない運動量移行による力も存在する(このことは代表者らが20年前の論文で指摘した事実である)。本年度は電子流体のゆらぎから生じるこの運動量移行過程が磁化のランダムウオークに寄与するかどうかを理論的に解析した。その結果、スピン緩和なしの状況でも計算上一見有限に残ると思われたランダム力成分は、別の寄与(vertex correction)と打ち消し合い、従来の現象論の結論と同じくスピン緩和が入った場合にのみネットに残るランダム力となることがわかった。加えて、磁化構造の電子への影響の高次を考えた際には、磁化構造自身がスピンの緩和機構としてはたらく効果のためにランダム力として寄与する新事実も見出された。このことは磁化のランダムウオークによる熱平衡での運動の実験結果に新しい知見を与えるものである。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

スピンホール効果などスピン依存伝導現象を流体的に解釈することで、スピンホール効果はスピン渦結合が原因であることなど、新しい知見がスムースに得られた。昨年度はランダム力にまで流体的解析を拡張することができ、極めて順調な進展ができている。

Strategy for Future Research Activity

今年度は前年度の成果を踏まえて、内的なスピン緩和機構なしに伝導電子から発生するランダム力を理論的結果をまとめ、陽動散逸定理の観点で解釈をし、幾何学的磁化構造など具体的な系での効果を見積もり実験への指針を示す。

Report

(2 results)
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (35 results)

All 2023 2022 2021 Other

All Int'l Joint Research (9 results) Journal Article (21 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 21 results,  Open Access: 9 results) Presentation (3 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results) Book (1 results) Funded Workshop (1 results)

  • [Int'l Joint Research] Central South University(中国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Rzeszow University of Technology/Adam Mickiewicz University/Polish Academy of Sciences(その他の国・地域)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Tbilisi State University(その他の国・地域)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Max Planck Institute(ドイツ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Johannes Kepler University(オーストリア)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University of Mainz(ドイツ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Martin-Luther-Universitat Halle-Wittenbe/GermanyRzeszow University of Technology(ポーランド)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Johannes Kepler University(オーストリア)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Intrinsic orbital and spin Hall effect in bismuth semimetal2023

    • Author(s)
      Qu Guanxiong、Tatara Gen
    • Journal Title

      Physical Review B

      Volume: 107 Issue: 21

    • DOI

      10.1103/physrevb.107.214421

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Anisotropy of the spin Hall effect in a Dirac ferromagnet2023

    • Author(s)
      Qu Guanxiong、Hayashi Masamitsu、Ogata Masao、Fujimoto Junji
    • Journal Title

      Physical Review B

      Volume: 108 Issue: 6 Pages: 064404-064404

    • DOI

      10.1103/physrevb.108.064404

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Soliton locking phenomenon in bulk single crystal of monoaxial chiral magnet MnNb3S62023

    • Author(s)
      Ohkuma M.、Mito M.、Kousaka Y.、Ohe J.、Akimitsu J.、Kishine J.、Inoue K.
    • Journal Title

      Applied Physics Letters

      Volume: 122 Issue: 9

    • DOI

      10.1063/5.0137379

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Magnetic ground state dependent magnetostriction effects on the chiral magnet CrNb3S62023

    • Author(s)
      Mito Masaki、Tajiri Takayuki、Kousaka Yusuke、Akimitsu Jun、Kishine Jun-ichiro、Inoue Katsuya
    • Journal Title

      Physical Review B

      Volume: 107 Issue: 5

    • DOI

      10.1103/physrevb.107.054427

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nonlocality of Electrically-Induced Spin Accumulation in Chiral Metals2022

    • Author(s)
      Tatara Gen
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 91 Issue: 7 Pages: 0737011-4

    • DOI

      10.7566/jpsj.91.073701

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] [1]Spin Hall Response at Finite Wave Vector in Ferromagnets2022

    • Author(s)
      Tatara Gen
    • Journal Title

      J. Phys. Soc. Jpn

      Volume: 91 Issue: 3 Pages: 0347051-6

    • DOI

      10.7566/jpsj.91.034705

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Calculation of the magnon drag force induced by an electric current in ferromagnetic metals2022

    • Author(s)
      Funaki Hiroshi、Tatara Gen
    • Journal Title

      Physical Review B

      Volume: 106 Issue: 13

    • DOI

      10.1103/physrevb.106.134435

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spin accumulation without spin current2022

    • Author(s)
      Atsuo Shitade and Gen Tatara
    • Journal Title

      Physical Review B

      Volume: 105 Issue: 20

    • DOI

      10.1103/physrevb.105.l201202

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Topological Charge Control of Skyrmion Structure in Frustrated Magnets by Circularly Polarized Light2022

    • Author(s)
      Miyata Mana、Ohe Jun-ichiro、Tatara Gen
    • Journal Title

      Physical Review Applied

      Volume: 18 Issue: 1

    • DOI

      10.1103/physrevapplied.18.014075

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inverse Faraday effect in massive Dirac electrons2022

    • Author(s)
      Qu Guanxiong、Tatara Gen
    • Journal Title

      Physical Review B

      Volume: 106 Issue: 9

    • DOI

      10.1103/physrevb.106.094414

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Skyrmion lattice hosted in synthetic antiferromagnets and helix modes2022

    • Author(s)
      Wang X.-G.、Chotorlishvili L.、Tatara G.、Dyrdal A.、Guo Guang-hua、Dugaev V. K.、Barnas J.、Parkin S.S.P.、Ernst A.
    • Journal Title

      Physical Review B

      Volume: 106 Issue: 10

    • DOI

      10.1103/physrevb.106.104424

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Truly chiral phonons in α-HgS2022

    • Author(s)
      Kyosuke Ishito, Huiling Mao, Yusuke Kousaka, Yoshihiko Togawa, Satoshi Iwasaki, Tiantian Zhang, Shuichi Murakami, Jun-ichiro Kishine, Takuya Satoh
    • Journal Title

      Nature Physics

      Volume: 19 Pages: 35-39

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] On the Definition of Chirality and Enantioselective Fields2022

    • Author(s)
      Kishine Jun‐ichiro、Kusunose Hiroaki、Yamamoto Hiroshi M.
    • Journal Title

      Israel Journal of Chemistry

      Volume: 62 Issue: 11-12 Pages: 1-6

    • DOI

      10.1002/ijch.202200049

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Nonequilibrium chiral soliton lattice in the monoaxial chiral magnet MnNb3S62022

    • Author(s)
      Ohkuma M.、Mito M.、Deguchi H.、Kousaka Y.、Ohe J.、Akimitsu J.、Kishine J.、Inoue K.
    • Journal Title

      Physical Review B

      Volume: 106 Issue: 10 Pages: 1-8

    • DOI

      10.1103/physrevb.106.104410

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Observation of Collective Resonance Modes in a Chiral Spin Soliton Lattice with Tunable Magnon Dispersion2022

    • Author(s)
      Shimamoto Y.、Matsushima Y.、Hasegawa T.、Kousaka Y.、Proskurin I.、Kishine J.、Ovchinnikov A. S.、Goncalves F. J. T.、Togawa Y.
    • Journal Title

      Physical Review Letters

      Volume: 128 Issue: 24 Pages: 1-6

    • DOI

      10.1103/physrevlett.128.247203

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Chirality-induced spin filtering in pseudo Jahn-Teller molecules2022

    • Author(s)
      Kato Akihito、Yamamoto Hiroshi M.、Kishine Jun-ichiro
    • Journal Title

      Physical Review B

      Volume: 105 Issue: 19 Pages: 1-5

    • DOI

      10.1103/physrevb.105.195117

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hydrodynamic theory of vorticity-induced spin transport2021

    • Author(s)
      Tatara Gen
    • Journal Title

      Physical Review B

      Volume: 104 Issue: 18

    • DOI

      10.1103/physrevb.104.184414

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Vorticity-induced anomalous Hall effect in an electron fluid2021

    • Author(s)
      Funaki Hiroshi、Toshio Riki、Tatara Gen
    • Journal Title

      Physical Review Research

      Volume: 3 Issue: 3

    • DOI

      10.1103/physrevresearch.3.033075

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hydrodynamic theory of chiral angular momentum generation in metals2021

    • Author(s)
      Funaki Hiroshi、Tatara Gen
    • Journal Title

      Physical Review Research

      Volume: 3 Issue: 2

    • DOI

      10.1103/physrevresearch.3.023160

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Topologically-mediated energy release by relativistic antiferromagnetic solitons2021

    • Author(s)
      Otxoa R. M.、Rama-Eiroa R.、Roy P. E.、Tatara G.、Chubykalo-Fesenko O.、Atxitia U.
    • Journal Title

      Physical Review Research

      Volume: 3 Issue: 4

    • DOI

      10.1103/physrevresearch.3.043069

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Thermal Spin Torque in Double-Barrier Tunnel Junctions with Magnetic Insulators2021

    • Author(s)
      Ortiz Pauyac Christian、Akosa Collins Ashu、Tatara Gen、Chshiev Mairbek、Kalitsov Alan
    • Journal Title

      Physical Review Applied

      Volume: 15 Issue: 6

    • DOI

      10.1103/physrevapplied.15.064003

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Intrinsic Orbital and Spin Hall Effect in Bismuth Semimetal2023

    • Author(s)
      Guanxiong Qu
    • Organizer
      Intermag 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Introduction to Spintronics: Field and current driven domain wall motion2022

    • Author(s)
      C. A. Akosa
    • Organizer
      African Institute of Mathematical Science (AIMS)-Limbe
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Inverse Faraday effect in massive Dirac electrons2022

    • Author(s)
      Guanxiong Qu
    • Organizer
      Magnetism and Magnetic Materials 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Book] "Unveiling Crystal Chirality through Phonon Dispersion" JPSJ News and Comments 20, 03 22023

    • Author(s)
      J Kishine
    • Publisher
      JSPS
    • Related Report
      2022 Annual Research Report
  • [Funded Workshop] 会議開催 Spin Argentina, International workshop Spintronics (Argentine, 2022)2022

    • Related Report
      2021 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2024-12-25  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi