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Theoretical Study on Transformation between Electric Power and Motive Power Mediated by Spin for Electricity Self-Generation Type Nanomachine

Research Project

Project/Area Number 16K04930
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Applied materials
Research InstitutionShizuoka University

Principal Investigator

Kokado Satoshi  静岡大学, 工学部, 教授 (50377719)

Co-Investigator(Kenkyū-buntansha) 角田 匡清  東北大学, 工学研究科, 准教授 (80250702)
Project Period (FY) 2016-10-21 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords伝導電子-スピン相互作用 / スピン-分子運動相互作用 / スピン軌道相互作用 / 結晶場 / s-d散乱 / 異方性磁気抵抗効果 / 摂動論 / 伝導電子-局在スピン間相互作用 / スピン-原子振動相互作用 / スピン緩和 / 摂動理論 / スピン-分子運動間相互作用 / ナノマシン / スピンエレクトロニクス / 物性理論
Outline of Final Research Achievements

"Electric generation type nanomachine", in which motions can be properly remote-controlled and travel motions are performed by the self-generated electric power, needs the mutual transformation between electron conduction and molecular motions. We proposed an idea that interactions between electrons and molecular motions mediated by localized spins can be used in the transformation. To formulate this V, we must find properties of s-d scatterings from the conduction (s) electron to the localized d orbitals. In this study, we theoretically studied the s-d scattering and anisotropic magnetoresistance (AMR) effect, which directly reflects the s-d scattering. We first developed the s-d scattering theory for a model with the crystal field, and then qualitatively explained experimental results of the AMR effects for Ni, Fe, and half-metal, which had not been explained by conventional theories.

Academic Significance and Societal Importance of the Research Achievements

我々は自己発電型ナノマシンの開発に必要な伝導電子からd軌道への電子散乱に注目し,その散乱を直接反映する異方性磁気抵抗(AMR)の理論を開発した.AMRは電気抵抗が磁化方向に依存する現象であり,約160年前から実験を中心に研究されてきた.一方,一部の散乱のみを取り入れた従来理論は特定の物質には有効なものの汎用性は低かった.本研究では全ての散乱を取り入れ,ハーフメタルを含む種々の物質に適用可能な理論を開発した.本理論により,従来理論では説明できなかったNi, Fe, ハーフメタルのAMRの説明に成功し,また磁性材料にとって重要なd軌道状態をAMRで容易に調べられ得ることも確認された.

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (33 results)

All 2020 2019 2018 2017 2016 Other

All Int'l Joint Research (1 results) Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Open Access: 5 results,  Acknowledgement Compliant: 1 results) Presentation (18 results) (of which Int'l Joint Research: 10 results,  Invited: 7 results) Remarks (6 results)

  • [Int'l Joint Research] 清華大学理学部物理学科(中国)

    • Related Report
      2016 Research-status Report
  • [Journal Article] Theoretical Study on Anisotropic Magnetoresistance Effect for Weak Ferromagnets with a Crystal Field of Tetragonal Symmetry2020

    • Author(s)
      Satoshi Kokado and Masakiyo Tsunoda
    • Journal Title

      Materials Today: Proceedings

      Volume: -

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Signs of anisotropic magnetoresistance in Co2MnGa Heusler alloy epitaxial thin films based on current direction2019

    • Author(s)
      Takashi Sato, Satoshi Kokado, Masahito Tsujikawa, Tomoyuki Ogawa, Satoru Kosaka, Masafumi Shirai, Masakiyo Tsunoda
    • Journal Title

      Applied Physics Express

      Volume: 12 Issue: 10 Pages: 103005-103005

    • DOI

      10.7567/1882-0786/ab42b4

    • NAID

      210000157090

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Theoretical Study on Anisotropic Magnetoresistance Effects of I//[100], I//[110], and I//[001] for Ferromagnets with A Crystal Field of Tetragonal Symmetry2019

    • Author(s)
      Satoshi Kokado and Masakiyo Tsunoda
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 88 Issue: 3 Pages: 034706-034706

    • DOI

      10.7566/jpsj.88.034706

    • NAID

      40021839204

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Large negative anisotropic magnetoresistance in Co2MnGa Heusler alloy epitaxial thin films2018

    • Author(s)
      Takashi Sato, Satoshi Kokado, Satoru Kosaka, Tsuyoshi Ishikawa, Tomoyuki Ogawa, and Masakiyo Tsunoda
    • Journal Title

      Appl. Phys. Lett.

      Volume: 113 Issue: 11

    • DOI

      10.1063/1.5047821

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Erratum: ``Twofold and Fourfold Symmetric Anisotropic Magnetoresistance Effect in A Model with Crystal Field'' [J. Phys. Soc. Jpn. 84, 094710 (2015)]2017

    • Author(s)
      Satoshi Kokado, Masakiyo Tsunoda
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 86 Issue: 10 Pages: 108001-108001

    • DOI

      10.7566/jpsj.86.108001

    • NAID

      210000134563

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] CORRECTION: Anisotropic Magnetoresistance Effect of a Strong Ferromagnet: Magnetization Direction Dependence in a Model With Crystal Field [Phys. Status Solidi C 11, No. 5-6, 1026-1032 (2014)]2017

    • Author(s)
      Satoshi Kokado, Masakiyo Tsunoda
    • Journal Title

      Physica Status Solidi C

      Volume: 14 Issue: 9 Pages: 1700218-1700218

    • DOI

      10.1002/pssc.201700218

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Magnetoresistance behaviors of conducting filaments in resistive-switching NiO with different resistance states2017

    • Author(s)
      Diyang Zhao, Shuang Qiao, Yuxiang Luo, Aitian Chen, Pengfei Zhang, Ping Zheng, Zhong Sun, Minghua Guo, Fu-kuo Chiang, Jian Wu, Jian-Lin Luo, Jianqi Li, Satoshi Kokado, Yayu Wang, and Yonggang Zhao
    • Journal Title

      ACS Applied Materials & Interfaces

      Volume: 9 Issue: 12 Pages: 10835-10846

    • DOI

      10.1021/acsami.6b16458

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Magneto-transport properties of pseudo-single-crystal Mn4N thin films2016

    • Author(s)
      Kazuki Kabara, Masakiyo Tsunoda, and Satoshi Kokado
    • Journal Title

      AIP Advances

      Volume: 7 Issue: 5

    • DOI

      10.1063/1.4974065

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Co2MnGaエピタキシャル薄膜における異方性磁気抵抗効果の電流方向による符号変化2020

    • Author(s)
      佐藤岳,古門聡士,辻川雅人, 小川智之, 小坂悟, 白井正文, 角田匡清
    • Organizer
      応用物理学会 春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Theoretical Study on Anisotropic Magnetoresistance Effect for Weak Ferromagnets with a Crystal Field of Tetragonal Symmetry2020

    • Author(s)
      Satoshi Kokado, Masakiyo Tsunoda
    • Organizer
      The 10th International Conference on Key Engineering Materials
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Theoretical Study on Anisotropic Magnetoresistance Effects for Various Ferromagnets2019

    • Author(s)
      Satoshi Kokado, Masakiyo Tsunoda
    • Organizer
      2nd International Conference on Semiconductors, Optoelectronics and Nanostructures
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Theoretical Study on Anisotropic Magnetoresistance Effect2019

    • Author(s)
      Satoshi Kokado, Masakiyo Tsunoda
    • Organizer
      5th World Congress on Materials Science & Engineering
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Theoretical Study on Anisotropic Magnetoresistance Effect2019

    • Author(s)
      Satoshi Kokado, Masakiyo Tsunoda
    • Organizer
      9th International Advances in Applied Physics & Materials Science Congress
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Co2MnGaエピタキシャル薄膜の異方性磁気抵抗効果2019

    • Author(s)
      佐藤岳,古門聡士,小坂悟,石川剛,小川智之,角田匡清
    • Organizer
      応用物理学会 春季学術講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] Intuitive Explanation of Anisotropic Magnetoresistance (AMR) Effect and Necessary Condition for Half-Metallic Ferromagnet “Negative AMR”2018

    • Author(s)
      Satoshi Kokado and Masakiyo Tsunoda
    • Organizer
      SPIE(The international society for optics and photonics)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Theoretical Study on Anisotropic Magnetoresistance Effects of I//[100], I//[110], and I//[001] for Ferromagnets2018

    • Author(s)
      Satoshi Kokado, Masakiyo Tsunoda
    • Organizer
      American Physical Society (APS) March Meeting 2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Relational expression between spin polarization ratio and anisotropic magnetoresistance ratio for nearly half-metallic ferromagnets2017

    • Author(s)
      Satoshi Kokado, Yuya Sakuraba, Masakiyo Tsunoda
    • Organizer
      81th DPG (Deutsche Physikalische Gesellschaft) Spring Meeting
    • Place of Presentation
      ドレスデン工科大学(Technische Universitat Dresden), Dresden, Germany
    • Year and Date
      2017-03-19
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] ハーフメタルに近い強磁性体のスピン分極率と異方性磁気抵抗比の間の関係式2017

    • Author(s)
      古門聡士, 桜庭裕弥, 角田匡清
    • 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, 大阪府豊中市
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] 異方性磁気抵抗効果を用いたCo2FeGa0.5Ge0.5薄膜のバルクスピン分極率解析2017

    • Author(s)
      桜庭裕弥, 中谷友也, Li Songtian, 古林孝夫, 三浦良雄, 宝野和博, 古門聡士, 田尻寛男
    • Organizer
      応用物理学会春季学術講演会
    • Place of Presentation
      パシフィコ横浜, 神奈川県横浜市
    • Year and Date
      2017-03-14
    • Related Report
      2016 Research-status Report
  • [Presentation] Analysis of conductive electron spin-polarization in Co2FeGa0.5Ge0.5 thin films having different compositions and chemical orderings2017

    • Author(s)
      Yuya Sakuraba, Satoshi Kokado, Tomoya M. Nakatani, Songtian Li, Takao Furubayashi, Hiroo Tajiri, Yoshio Miura, Kazuhiro Hono
    • Organizer
      INTERMAG2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Theoretical Study on Anisotropic Magnetoresistance Effect2017

    • Author(s)
      Satoshi Kokado, Yuya Sakuraba, Masakiyo Tsunoda
    • Organizer
      Junjiro Kanamori Memorial International Symposium: New Horizon of Magnetism
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 逆ペロブスカイト型Mn4N擬単結晶薄膜の電流磁気効果2017

    • Author(s)
      鹿原和樹, 角田匡清, 古門聡士
    • Organizer
      強的秩序とその操作に関する第4回研究会
    • Place of Presentation
      東京大学本郷キャンパス, 東京都文京区
    • Related Report
      2016 Research-status Report
  • [Presentation] Intuitive Explanation of Anisotropic Magnetoresistance (AMR) Effect and Necessary Condition for Half-Metallic Ferromagnet “Negative AMR’’2017

    • Author(s)
      Satoshi Kokado and Masakiyo Tsunoda
    • Organizer
      Seminar at School of Materials Science and Engineering, Guilin University of Electronic Technology
    • Place of Presentation
      桂林電子科技大学材料科学科, 桂林市, 中国
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Intuitive Explanation of Anisotropic Magnetoresistance (AMR) Effect and Necessary Condition for Half-Metallic Ferromagnet “Negative AMR’’2017

    • Author(s)
      Satoshi Kokado and Masakiyo Tsunoda
    • Organizer
      Seminar at Department of Physics, Tsinghua University
    • Place of Presentation
      清華大学理学部物理学科, 北京市, 中国
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] 逆ペロブスカイト型遷移金属窒化物薄膜の磁気伝導特性2017

    • Author(s)
      角田匡清, 鹿原和樹, 古門聡士
    • Organizer
      第2回磁性材料・磁性薄膜研究会「窒化物磁性材料の新展開」
    • Place of Presentation
      名古屋工業大学, 愛知県名古屋市
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Theoretical Study on Anisotropic Magnetoresistance Effects in Ferromagnets2016

    • Author(s)
      Satoshi Kokado and Masakiyo Tsunoda
    • Organizer
      International Symposium on Innovative Materials and Physics
    • Place of Presentation
      ウロンゴン大学超伝導・電子材料研究所、ニューサウスウェールズ州、オーストラリア
    • Year and Date
      2016-11-20
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Remarks] 古門研究室ホームページ

    • URL

      https://wwp.shizuoka.ac.jp/kokado

    • Related Report
      2019 Annual Research Report 2018 Research-status Report 2017 Research-status Report
  • [Remarks] 静岡大学教員データベース 古門聡士

    • URL

      https://tdb.shizuoka.ac.jp/RDB/public/Default2.aspx?id=10335&l=0

    • Related Report
      2019 Annual Research Report
  • [Remarks] 東北大学研究者紹介 角田匡清

    • URL

      http://db.tohoku.ac.jp/whois/detail/2d38facafb7796ce6bea4ad4ec927cdd.html

    • Related Report
      2019 Annual Research Report
  • [Remarks] 静岡大学教員データベース

    • URL

      https://tdb.shizuoka.ac.jp/RDB/public/Default2.aspx?id=10335&l=0

    • Related Report
      2018 Research-status Report 2017 Research-status Report 2016 Research-status Report
  • [Remarks] 東北大学研究者紹介

    • URL

      http://db.tohoku.ac.jp/whois/detail/2d38facafb7796ce6bea4ad4ec927cdd.html

    • Related Report
      2018 Research-status Report 2017 Research-status Report 2016 Research-status Report
  • [Remarks] 古門研究室のホームページ

    • URL

      http://www.ipc.shizuoka.ac.jp/~tskokad/

    • Related Report
      2016 Research-status Report

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Published: 2016-10-24   Modified: 2021-02-19  

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