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Theoretical study on the nonequilibrium dynamics and the quantum transport phenomena of topological magnetic textures

Research Project

Project/Area Number 17H02924
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Condensed matter physics II
Research InstitutionWaseda University

Principal Investigator

Mochizuki Masahito  早稲田大学, 理工学術院, 教授 (80450419)

Co-Investigator(Kenkyū-buntansha) 古川 信夫  青山学院大学, 理工学部, 教授 (00238669)
竹内 祥人  青山学院大学, 理工学部, 助教 (80738328)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥19,110,000 (Direct Cost: ¥14,700,000、Indirect Cost: ¥4,410,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2018: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2017: ¥14,300,000 (Direct Cost: ¥11,000,000、Indirect Cost: ¥3,300,000)
Keywordsスキルミオン / スピントロニクス / トポロジカル磁気テクスチャ / 非平衡ダイナミクス / マイクロ波応答 / 磁気メモリ / トポロジカル磁性 / 非平衡現象 / スピン起電力 / スピン波励起 / 磁性 / トポロジカル / エレクトロマグノン / 負熱膨張 / DM相互作用
Outline of Final Research Achievements

In this project, we theoretical discovered and revealed a lot of novel nonequilibrium dynamical phenomena and quantum transport phenomena of nanometric topological magnetic textures, especially, those of magnetic skyrmions. The phenomena include ``microwave-driven translational motion of skyrmions”, ``maicrowave-DC voltage conversion using skyrmions”, and ``emergence of skyrmion-like spin textures in driven magnetic domain walls”, which are of importance in the fields of condensed-matter physics and spintronics from the viewpoints of both fundamental science and technology. In addition, we theoretically proposed several controlled techniques to write or generate skyrmions, which are recognized as fundamental techniques for possible applications of skyrmions or topological magnetic textures to future high-performance magnetic memory devices.

Academic Significance and Societal Importance of the Research Achievements

磁石の中に発現する磁気構造は、ハードディスクやセンサー、メモリ、マイクロ波素子等に応用されて、私たちの生活を豊かにしています。このような磁気素子のさらなる高性能化と省エネ化を目指して、新しい磁気構造である「トポロジカル磁気テクスチャ」を探索し、それらが示す未知の物性現象やデバイス機能を、量子統計力学などの手法を駆使した理論計算によって研究しました。特に、このような磁気構造の代表格である「スキルミオン」に注目して研究を進め、「マイクロ波によってスキルミオンが伝送される現象」や「スキルミオンによるマイクロ波-直流電流変換」など、興味深い物理現象と有用なデバイス機能を数多く発見・解明しました。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (53 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (2 results) Journal Article (20 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 17 results,  Open Access: 2 results) Presentation (28 results) (of which Int'l Joint Research: 6 results,  Invited: 9 results) Remarks (3 results)

  • [Int'l Joint Research] University College London/Imperial College London(英国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Universite Paris Diderot-Paris 7(フランス)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Creation of nanometric magnetic skyrmions by global application of circularly polarized microwave magnetic field2020

    • Author(s)
      M. Miyake, and M. Mochizuki
    • Journal Title

      Physical Review B

      Volume: 101 Issue: 9

    • DOI

      10.1103/physrevb.101.094419

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Theoretical study on stabilization and destabilization of magnetic skyrmions by uniaxial-strain-induced anisotropic Dzyaloshinskii--Moriya interactions2020

    • Author(s)
      K. Tanaka, R. Sugawara, and M. Mochizuki
    • Journal Title

      Physical Review Materials

      Volume: 4 Issue: 3

    • DOI

      10.1103/physrevmaterials.4.034404

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 「局所電場印加による磁気スキルミオン書き込み技術の理論設計」2020

    • Author(s)
      望月維人
    • Journal Title

      日本磁気学会報「まぐね」

      Volume: 第15巻

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Theoretical study on slit experiments in Rashba electron systems2020

    • Author(s)
      K. Shimizu, and M. Mochizuki
    • Journal Title

      Physical Review B

      Volume: 101 Issue: 4

    • DOI

      10.1103/physrevb.101.045301

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Microwave-Active Dynamics of Magnetic Skyrmions under Application of a Tilted Magnetic Field2019

    • Author(s)
      M. Mochizuki, T. Koide, M. Ikka, and A. Takeuchi
    • Journal Title

      Proceedings of META 2019 Lisbon - Portugal

      Volume: META2019 Pages: 609-610

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Dynamical magnetoelectric phenomena of skyrmions in multiferroics2019

    • Author(s)
      M. Mochizuki
    • Journal Title

      Physical Sciences Reviews

      Volume: 5 Issue: 1

    • DOI

      10.1515/psr-2019-0017

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] DC spinmotive force from microwave-active resonant dynamics of skyrmion crystal under a tilted magnetic field2019

    • Author(s)
      T. Koide, A. Takeuchi, and M. Mochizuki
    • Journal Title

      Physical Review B

      Volume: 100 Issue: 1

    • DOI

      10.1103/physrevb.100.014408

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 「磁気スキルミオンのマイクロ波誘起現象と素子機能」2019

    • Author(s)
      望月維人
    • Journal Title

      応用物理

      Volume: 88

    • NAID

      130007709458

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Electrically driven spin torque and dynamical Dzyaloshinskii-Moriya interaction in magnetic bilayer systems2019

    • Author(s)
      A. Takeuchi, S. Mizushima, and M. Mochizuki
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1

    • DOI

      10.1038/s41598-019-46009-x

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Prediction of topological Hall effect in a driven magnetic domain wall2019

    • Author(s)
      K.-J. Kim, M. Mochizuki, and T. Ono
    • Journal Title

      Applied Physics Express

      Volume: 12 Issue: 5 Pages: 053006-053006

    • DOI

      10.7567/1882-0786/ab1801

    • NAID

      210000155718

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Magnon-photon coupling in the noncollinear magnetic insulator Cu 2 OSeO 32019

    • Author(s)
      L. V. Abdurakhimov, S. Khan, N. A. Panjwani, J. D. Breeze, M. Mochizuki, S. Seki, Y. Tokura, J. J. L. Morton, and H. Kurebayashi
    • Journal Title

      Phys. Rev. B

      Volume: 99 Issue: 14 Pages: 140401-140401

    • DOI

      10.1103/physrevb.99.140401

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Theory of magnetism-driven negative thermal expansion in inverse perovskite antiferromagnets2019

    • Author(s)
      M. Kobayashi, M. Mochizuki
    • Journal Title

      Physical Review Materials

      Volume: 3 Issue: 2

    • DOI

      10.1103/physrevmaterials.3.024407

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Microscopic magnetization distribution of Bloch lines in a uniaxial magnet2019

    • Author(s)
      K. Kurushima, K. Tanaka, H. Nakajima, M. Mochizuki, S. Mori
    • Journal Title

      Journal of Applied Physics

      Volume: 125 Issue: 5 Pages: 053902-053902

    • DOI

      10.1063/1.5042678

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Resonance modes and microwave-driven translational motion of a skyrmion crystal under an inclined magnetic field2018

    • Author(s)
      M. Ikka, A. Takeuchi, M. Mochizuki
    • Journal Title

      Physical Review B

      Volume: 98 Issue: 18 Pages: 184428-184428

    • DOI

      10.1103/physrevb.98.184428

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Colossal electromagnon excitation in the non-cycloidal phase of TbMnO3 under pressure2018

    • Author(s)
      I. Aupiais, M. Mochizuki, H. Sakata, R. Grasset, Y. Gallais, A. Sacuto, M. Cazayous
    • Journal Title

      npj Quantum Materials

      Volume: 3 Issue: 1 Pages: 60-60

    • DOI

      10.1038/s41535-018-0130-3

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Selective activation of an isolated magnetic skyrmion in a ferromagnet with microwave electric fields2018

    • Author(s)
      A. Takeuchi, M. Mochizuki
    • Journal Title

      Applied Physic Letters

      Volume: 113 Issue: 7 Pages: 072404-072404

    • DOI

      10.1063/1.5045629

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Highly efficient induction of spin polarization by circularly polarized electromagnetic waves in the Rashba spin-orbit systems2018

    • Author(s)
      Mochizuki Masahito、Ihara Keisuke、Ohe Jun-ichiro、Takeuchi Akihito
    • Journal Title

      Applied Physics Letters

      Volume: 112 Issue: 12 Pages: 122401-122401

    • DOI

      10.1063/1.5022262

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spin model for nontrivial types of magnetic order in inverse-perovskite antiferromagnets2018

    • Author(s)
      M. Mochizuki, M. Kobayashi, R. Okabe, and D. Yamamoto
    • Journal Title

      Physical Review B

      Volume: 97 Issue: 6

    • DOI

      10.1103/physrevb.97.060401

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Controlled creation of nanometric skyrmions using external magnetic fields2017

    • Author(s)
      M. Mochizuki
    • Journal Title

      Applied Physics Letters

      Volume: 111 Issue: 9

    • DOI

      10.1063/1.4993855

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Formation process of skyrmion lattice domain boundaries: The role of grain boundaries2017

    • Author(s)
      H. Nakajima, A. Kotani, M. Mochizuki, K. Harada, S. Mori
    • Journal Title

      Appl. Phys. Lett

      Volume: 111 Issue: 19 Pages: 1924011-5

    • DOI

      10.1063/1.4991791

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 一軸張力ひずみによるスキルミオン相安定化・不安定化の理論研究:基底状態相図と有限温度相図2020

    • Author(s)
      田中康平, 朝日透, 望月維人
    • Organizer
      日本物理学会第75年次大会(2020年) 18pB21-9
    • Related Report
      2019 Annual Research Report
  • [Presentation] Floquet理論を用いたα-(BEDT-TTF)2I3の光誘起トポロジカル相転移の理論研究2020

    • Author(s)
      北山圭亮, 望月維人
    • Organizer
      日本物理学会第75年次大会(2020年) 19aB21-8
    • Related Report
      2019 Annual Research Report
  • [Presentation] 有機導体α-(BEDT-TTF)2I3における円偏光誘起トポロジカル状態の性質2020

    • Author(s)
      田中康寛, 望月維人
    • Organizer
      日本物理学会第75年次大会(2020年) 19aB21-9
    • Related Report
      2019 Annual Research Report
  • [Presentation] ニューラルネットワークによるn状態クロック模型のKT転移の検出2020

    • Author(s)
      宮島悠輔, 村田優介, 田中康寛, 望月維人
    • Organizer
      日本物理学会第75年次大会(2020年) 19pK36-2
    • Related Report
      2019 Annual Research Report
  • [Presentation] Microwave-Active Dynamics of Magnetic Skyrmions under Application of a Tilted Magnetic field2019

    • Author(s)
      Masahito Mochizuki
    • Organizer
      The 10th International Conference on Metamaterials, Photonic Crystals and Plasmonics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Microwave-Induced Dynamical Phenomena of Magnetic Skyrmions2019

    • Author(s)
      Masahito Mochizuki
    • Organizer
      The 4th International Conference ``Nanomagnetism and spintronics" (Sol-SkyMag 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Microwave-driven dynamics of magnetic skyrmions2019

    • Author(s)
      Masahito Mochizuki
    • Organizer
      The 5th International Worskhop on Topological Structures in Ferroic Materials (TOPO2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Theoretical study of Photo-induced phase transition in α-(BEDT-TTF)2I3 using Floquet theory2019

    • Author(s)
      Keisuke Kitayama, Masahito Mochizuki
    • Organizer
      International Conference on Topological Materials Science 2019 (TopoMat2019)
    • Related Report
      2019 Annual Research Report
  • [Presentation] スピン軌道相互作用のある電子系における円偏光誘起スピン偏極の理論:数値計算とフロケ解析2019

    • Author(s)
      田中康寛, 望月維人
    • Organizer
      日本物理学会2019年秋季大会 11aD10-1
    • Related Report
      2019 Annual Research Report
  • [Presentation] Rashba電子系におけるスリット型電子干渉実験の理論研究2019

    • Author(s)
      清水宏太郎, 望月維人
    • Organizer
      日本物理学会2019年秋季大会 10aD15-7
    • Related Report
      2019 Annual Research Report
  • [Presentation] 一軸張力歪みによるスキルミオン相安定化の数値的研究2019

    • Author(s)
      田中康平, 菅原諒介, 朝日透, 望月維人
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Dynamical Phenomena and Device Functions of Magnetic Skyrmions2018

    • Author(s)
      Masahito Mochizuki
    • Organizer
      The 19th Japan-Korea-Taiwan Symposium on Strongly Correlated Electron Systems (JKT19)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 空間反転対称性の破れた磁性体における磁気スキルミオン2018

    • Author(s)
      望月維人
    • Organizer
      新学術領域「J-Physics:多極子伝導系の物理」Tropical Topical Meeting「カイラル磁性体EuPtSiの電子物性--研究の現状と今後の展開--」
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] スキルミオン結晶を用いたマイクロ波による直流スピン起電力生成の理論研究2018

    • Author(s)
      小出竜也, 竹内祥人, 望月維人
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] マイクロ波によるスキルミオン伝送の理論研究2018

    • Author(s)
      一花幹人, 竹内祥人, 望月維人
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] スキルミオン型トポロジカル磁気構造のスピン軌道トルク駆動2018

    • Author(s)
      大木祐人, 竹内祥人, 望月維人
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 逆ペロブスカイト型マンガン窒化物における負の熱膨張と磁気相転移の理論研究2018

    • Author(s)
      小林賢也, 望月維人
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 円偏光マイクロ波による磁化反転とスキルミオン生成の理論研究2018

    • Author(s)
      三宅将之, 望月維人
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Dynamical Phenomena and Device Functions of Magnetic Skyrmions2018

    • Author(s)
      M. Mochizuki
    • Organizer
      EDTM (Electron Devices Technology and Manufacturing Conference)2018 Symposium on Frontier Researches of Functional Oxide Devices and Material
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] エレクトロマグノン励起を用いた孤立スキルミオンの駆動2018

    • Author(s)
      竹内祥人, 望月維人
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 負の熱膨張を示す逆ペロブスカイト型Mn窒化物の磁気秩序と相転移の理論研究2018

    • Author(s)
      小林賢也, 岡部玲央哉, 山本大輔, 望月維人
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] スキルミオン結晶相においてマイクロ波が誘起する直流スピン起電力成分の理論研究2018

    • Author(s)
      小出竜也, 竹内祥人, 望月維人
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] スキルミオン型トポロジカル磁気構造のスピン軌道トルク駆動の理論研究2018

    • Author(s)
      大木祐人, 竹内祥人, 望月維人
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 傾斜磁場中のスキルミオン結晶相が示すマイクロ波磁気共鳴モードの理論研究2018

    • Author(s)
      一花幹人, 竹内祥人, 望月維人
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 磁性強誘電体が示す電場励起マグノンと光・マイクロ波現象2017

    • Author(s)
      望月維人
    • Organizer
      第5回豊田理研ワークショップ「スピン秩序の動的光制御」
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] トポロジカル磁気構造が拓く新しいスピントロニクス2017

    • Author(s)
      望月維人
    • Organizer
      第78回応用物理学会秋季学術講演会特別シンポジウム「物質中のトポロジー:応用にどのように結びつくのか?」
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Dynamical Phenomena of Magnetic Skyrmions2017

    • Author(s)
      M. Mochizuki
    • Organizer
      International Workshop on Topological Structures in Ferroic Material
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] スピンカイラリティの空間勾配によるスピン流2017

    • Author(s)
      竹内祥人, 大江純一郎
    • Organizer
      日本物理学会2017年秋季大会
    • Related Report
      2017 Annual Research Report
  • [Remarks] 早稲田大学先進理工学部応用物理学科 望月維人研究室のホームページ

    • URL

      http://www.f.waseda.jp/masa_mochizuki/index.html

    • Related Report
      2019 Annual Research Report
  • [Remarks] 望月維人研究室のホームページ

    • URL

      http://www.f.waseda.jp/masa_mochizuki/index.html

    • Related Report
      2018 Annual Research Report
  • [Remarks] 温めると縮む物質の負熱膨張現象メカニズムを解明

    • URL

      https://www.waseda.jp/top/news/63708

    • Related Report
      2018 Annual Research Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

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