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Scientific principle elucidation of bulk spin orbit torque and its application for spin devices

Research Project

Project/Area Number 17H03240
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Electronic materials/Electric materials
Research InstitutionToyota Technological Institute

Principal Investigator

AWANO HIROYUKI  豊田工業大学, 工学(系)研究科(研究院), 教授 (40571675)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2019: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2017: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Keywordsバルクスピン軌道トルク / 磁性細線メモリ / スピンロジック / 磁壁駆動速度 / 希土類・遷移金属合金 / フェリ磁性材料 / 電流磁壁駆動 / 臨界電流密度 / 磁性細線 / スピンホール効果 / ジャロシンスキー守谷相互作用 / 磁壁移動速度 / レーストラックメモリ / 希土類/遷移金属合金・多層膜 / ナノインプリントスピンデバイス / 磁壁 / 熱磁気スピン応答 / スピン軌道トルク / 磁気メモリ
Outline of Final Research Achievements

Current driven domain wall motions of Rare Earth (RE) - Transition Metal (TM) / Pt magnetic wire were observed. In the case of TbCo/Pt magnetic wire, the domain wall (DW) moves along to the current direction by spin orbital torque (SOT) due to the hetero-interface. The DW velocity was 100 m/sec. The Tb has large orbital magnetic moment (L). Therefore, the ferri-magnetic coupling between Tb and Co was dispersed, the SOT was also dispersed. If it is the cause of the slow domain wall speed, making a GdFeCo/Pt magnetic wire using a small L Gd may increase the domain wall speed by the current. As a result of experiment, we succeeded in increasing the domain wall speed of GdFeCo to 2600 m/sec. Next, the thickness of the GdFeCo layer on which the SOT effectively works was investigated. Surprisingly, even if the GdFeCo thickness is 500 nm, the domain wall moves still in the current direction by SOT. Thus,by using RE-TM magnetic layer, the SOT interface effect can be improved to bulk effect.

Academic Significance and Societal Importance of the Research Achievements

磁性膜と重金属膜のヘテロ界面にはジャロシンスキー守谷相互作用とスピンホール効果が発現し、スピントロニクスデバイスの新たな駆動原理として期待されている。しかし、これは界面効果であるため界面数nmにしか及ばず応用上の問題であった。そこで、希土類金属と遷移金属からなるRE-TM磁性膜と重金属膜を積層した磁性細線を作成し、電流磁壁駆動の実験を行ったところ、驚いたことにこの界面効果がTbCoでは15nm程度、GdFeCoでは500nm以上にまで及ぶことがわかった。このバルク的に利用可能なバルクスピン軌道トルクは高機能省電力メモリやロジック等の新たなスピンエレクトロニクス技術への応用展開が期待できる。

Report

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

    (54 results)

All 2020 2019 2018 2017 Other

All Journal Article (13 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Open Access: 5 results) Presentation (40 results) (of which Int'l Joint Research: 20 results,  Invited: 3 results) Remarks (1 results)

  • [Journal Article] Observation of spin-motive force in ferrimagnetic GdFeCo alloy films2020

    • Author(s)
      S. Fukuda, H. Awano, K. Tanabe
    • Journal Title

      Appl. Phys. Lett.

      Volume: 116 Issue: 10 Pages: 102402-102402

    • DOI

      10.1063/5.0002802

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 希土類・遷移金属(RE-TM)フェリ磁性細線の電流磁壁駆動2020

    • Author(s)
      粟野博之
    • Journal Title

      日本磁気学会誌

      Volume: 15 Pages: 24-30

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Strain-induced switching of heat current direction generated by magneto-thermoelectric effects2019

    • Author(s)
      S. Ota. K. Uchida, R. Iguchi, P. V. Thach, H. Awano, D. Chiba
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 131197-131197

    • DOI

      10.1038/s41598-019-49567-2

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] ntropy production by thermodynamic current in ambipolar conductores with identical spin dynamics between holes and electrons2019

    • Author(s)
      S. Aktar, M. Sakai, S. Hasegawa, O. Nakamura, H. Awano
    • Journal Title

      Appl. Phys. Express

      Volume: 12 Issue: 5 Pages: 053004-053004

    • DOI

      10.7567/1882-0786/ab101e

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Long spin coherence length and bulk-like spin-orbit torque in ferrimagnetic multilayers2019

    • Author(s)
      J. Yu, D. Bang, R. Mitshra, R. Ramaswamy, J. H. Oh, H. J. Park, Y. Jeong, P. V. Thach, D. K. Lee, G. Go, S. W. Lee, Y. Wang, S. Shi, X. Qiu, Hi. Awano, K. J. Lee, H. Yangi
    • Journal Title

      Nature Materials

      Volume: 18 Issue: 1 Pages: 29-34

    • DOI

      10.1038/s41563-018-0236-9

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] [Tb/Co]/Pt磁性細線の電流磁壁駆動に関する研究2019

    • Author(s)
      粟野博之,Do Bang,Pham Van Thach
    • Journal Title

      電気学会マグネティックス研究会資料

      Volume: MAG-19-023 Pages: 50-60

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Interference Induced Enhancement of Magneto-Optical Effect in Pt/TbCo Hetero-Structured Films2018

    • Author(s)
      S. Iemoto, S. Sumi, P. V. Thach, H. Awano, M. Hayashi
    • Journal Title

      Crystals

      Volume: 8 Issue: 10 Pages: 1-7

    • DOI

      10.3390/cryst8100377

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Current-induced domain wall motion in antiferromagneticallycoupled structures: Fundamentals and applications2018

    • Author(s)
      D. Bang, P. V. Thach, H. Awano
    • Journal Title

      Advanced Materials and Devices

      Volume: 3 Issue: 4 Pages: 389-398

    • DOI

      10.1016/j.jsamd.2018.09.003

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pt/TbCoヘテロ界面積層膜における磁気光学効果の波長依存性評価2018

    • Author(s)
      家元章吾、鷲見聡、Pham Van Thach, 粟野博之, 林将光
    • Journal Title

      電気学会マグネティックス研究会資料

      Volume: MAG-18-105 Pages: 33-37

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Interference induced enhancement of magneto-optical Kerr effect in ultrathin magnetic films2018

    • Author(s)
      Satoshi Sumi, Hiroyuki Awano, and Masamitsu Hayashi
    • Journal Title

      Scientific Reports

      Volume: 8 Pages: 776-776

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Multilayered current-induced domain wall motion in Pt/Tb-Co/Ta/Tb-Co/Pt magnetic wire2018

    • Author(s)
      Yuichiro Kurokawa, and Hiroyuki Awano
    • Journal Title

      AIP Advances

      Volume: 8 Pages: 025309-025309

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] フレキシブルナノインプリントプラスチック基板を用いたバルクスピントルク磁化反転 ~ 大幅な磁化反転電流密度低減2018

    • Author(s)
      粟野博之、浅利司、柴田凌輔
    • Journal Title

      電子情報通信学会技術研究報告書

      Volume: 117 Pages: 57-62

    • Related Report
      2017 Annual Research Report
  • [Journal Article] (Tb/Co)/Pt ヘテロ界面磁性細線の電流磁壁駆動2017

    • Author(s)
      Do Bang, 鷲見聡、粟野博之
    • Journal Title

      電気学会マグネティックス研究会資料

      Volume: MAG17-148 Pages: 45-50

    • Related Report
      2017 Annual Research Report
  • [Presentation] フェリ磁性体 GdFeCo の磁性共鳴によるスピン起電力2020

    • Author(s)
      福田 舜, 鷲見 聡, 田辺 賢士, 粟野 博之
    • Organizer
      IEEE Magnetics Society Nagoya Chapter若手研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] GdFeCo 薄膜における磁気バブルの生成および電流誘起磁壁移動2020

    • Author(s)
      永田 裕資, 田辺 賢士, 粟野 博之
    • Organizer
      IEEE Magnetics Society Nagoya Chapter若手研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 磁性層/重金属層ヘテロ構造における磁気光学効果2020

    • Author(s)
      松本 憩, 鷲見 聡, 田辺 賢士, 粟野 博之
    • Organizer
      IEEE Magnetics Society Nagoya Chapter若手研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 電流磁璧駆動型磁性細線の熱分布の観察2020

    • Author(s)
      澤 拓哉, 鷲見 聡, 田辺 賢士, 粟野 博之
    • Organizer
      IEEE Magnetics Society Nagoya Chapter若手研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] [TbCo]/Pt,[TbCo]/Cu ヘテロ接合膜の磁気熱電効果2020

    • Author(s)
      久田 真人, 田辺 賢士, 粟野 博之
    • Organizer
      IEEE Magnetics Society Nagoya Chapter若手研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] TbCo結晶膜のスピンゼーベック効果2020

    • Author(s)
      鷲見 聡、田辺 賢士、粟野 博之
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] フェリ磁性体GdFeCoの磁性共鳴によるスピン起電力2020

    • Author(s)
      福田 舜、鷲見 聡、田辺 賢士、粟野 博之
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] GdFeCo磁性細線における磁気バブルの生成および電流駆動2020

    • Author(s)
      永田 裕資、Thach Pham、鷲見 聡、田辺 賢士、粟野 博之
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 磁気光学効果による重金属由来の磁気的界面効果の検出2020

    • Author(s)
      松本 憩、Pham Van Thach、鷲見 聡、田辺 賢士、粟野 博之、王 世浩、石橋 隆幸
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] [TbCo]/Pt, [TbCo]/Cuヘテロ接合膜の磁気熱電効果2020

    • Author(s)
      久田 真人、鷲見 聡、田辺 賢士、粟野 博之
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Annalysis of thermal effects in current driven magnetic wires2019

    • Author(s)
      T. Sawa, S. Sumi, H. Awano
    • Organizer
      The 64th Magnetism and Magnetic Materials (MMM)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Very fast current-induced domain wall motion with speed of over 2.5kms-1 driven by spin orbit torques in ferrimagnetic GdFeCo wires2019

    • Author(s)
      P. V. Thach, S. Sumi, H. Awano
    • Organizer
      The 64th Magnetism and Magnetic Materials (MMM)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Unusual phenomenon in which domain walls move in the current direction by STT in thick GdFeCo wire w/o heavy metal interface2019

    • Author(s)
      A. Takahashi, S. Sumi, H. Awano
    • Organizer
      The 64th Magnetism and Magnetic Materials (MMM)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Observation of interfacial effects at Pt/GdFeCo interface using magneto-optical Kerr effect2019

    • Author(s)
      K. Matsumoto, P. V. Thach, S. Sumi, K. Tanabe, H. Awano
    • Organizer
      The 10th Joint European Magnetic Symposium (JEMS)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Current-Induced Domain Wall Motion with Very High Velocity in Ferrimagnetic GdFeCo Wires2019

    • Author(s)
      P. V. Thach, S. Sumi, H. Awano
    • Organizer
      The 10th Joint European Magnetic Symposium (JEMS)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Does spin orbit torque also work on current driven domain wall motion of thick GdFeCo(500nm) single layer magnnetic wire without heavy metal Pt layer?2019

    • Author(s)
      A. Takahashi, S. Sumi, H. Awano
    • Organizer
      The 18th Magnetics and Optics Research International Symposium (MORIS)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Magneto-optical effect in magnetic layer/heavy metal layer hetero-structure2019

    • Author(s)
      K. Matsumoto, P. V. Thach, S. Sumi, K. Tanabe, H. Awano
    • Organizer
      The 18th Magnetics and Optics Research International Symposium (MORIS)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Observation of thermal distibution in magnetic wire under current injection2019

    • Author(s)
      T. Sawa, S. Sumi, H. Awano
    • Organizer
      The 18th Magnetics and Optics Research International Symposium (MORIS)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Current-induced domain wall motion driven by spin orbit torque in ferrimagnetic GdFeco wires2019

    • Author(s)
      P. V. Thach, S. Sumi, H. Awano
    • Organizer
      The 18th Magnetics and Optics Research International Symposium (MORIS)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 電流磁壁駆動磁性細線の温度分布測定2019

    • Author(s)
      澤 拓哉, 鷲見 聡, 田辺 賢士, 粟野 博之
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] TbCo結晶膜の異常ネルンスト効果2019

    • Author(s)
      鷲見 聡、田辺 賢士、粟野 博之
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 垂直磁気異方性によるスピン起電力の増大2019

    • Author(s)
      福田 舜、鷲見 聡、田辺 賢士、粟野 博之
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] [TbCo]/Pt, [TbCo]/Cuヘテロ接合膜の磁気熱電効果2019

    • Author(s)
      久田 真人, 鷲見聡, 田辺 賢士, 粟野 博之
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Observation of thermal distribution of magnetic nanowire memory by current injection2019

    • Author(s)
      T. Sawa, M. Kawamoto, S. Sumi, P. V. Thach, K. Tanabe, H. Awano
    • Organizer
      2019 Joint MMM-INTERMAG
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 磁性層/重金属層ヘテロ構造の磁気光学効果2019

    • Author(s)
      松本 憩, 鷲見 聡, 田辺 賢士, 粟野 博之
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 電流磁壁駆動磁性細線の温度分布測定2019

    • Author(s)
      澤 拓哉, 鷲見 聡, 田辺 賢士, 粟野 博之
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 厚膜GdFeCo磁性細線における電流誘起磁壁移動2019

    • Author(s)
      高橋 晨、黒川 雄一郎、鷲見 聡、田辺 賢士、粟野 博之
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Current driven domain wall motion study of magnetic wire with hetero-interface between RE-TM and heavy metal layers2018

    • Author(s)
      H. Awano, C. Y. Wu, H. Kondo, R. Yoshimura, S. Sumi, Y. Kurokawa, D. Bang, P. V. Thach, K. W. Lin
    • Organizer
      The 5th International Conference of Asian Union of Magnetics Societies (IcAUMS 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Spin orbit torque effect of TbCo/Pt magnetic wires2018

    • Author(s)
      H. Awano, P. V. Thach, D. Bang, S. Sumi
    • Organizer
      ETOPIM11
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Influence of the Tb layer on current driven domain wall motion in Pt / Co / Tb magnetic wire2018

    • Author(s)
      H. Awano, W.C. Ying, R. Yoshimura, S. Sumi, P.V. Thach
    • Organizer
      INTERMAG 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Interference induced enhancement of magneto-optical effect in Pt/TbCo hetero-structured films2018

    • Author(s)
      S. Iemoto, S. Sumi, H. Awano, M. Hayashi
    • Organizer
      ETOPIM11
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Magneto-optical properties of Pt/TbCo heterostructure films2018

    • Author(s)
      S. Iemoto, S. Sumi, H. Awano, M. Hayashi
    • Organizer
      INTERMAG 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Fast current-induced domain wall motion in Tb/Co multilayered wires with symmetric structure2018

    • Author(s)
      Pham Van Thach, Do Bang, Hiroyuki Awano
    • Organizer
      18th Magnetics and Optics Research International Simposium
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Magneto-optical characteristics of Pt/TbCo hetrostructure films2018

    • Author(s)
      S. Iemoto, S. Sumi, H. Awano, M. Hayashi
    • Organizer
      18th Magnetics and Optics Research International Simposium
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spin Orbitoronics study in hetero- structure of ferri-magnetic (RE-TM) and heavy metal Pt2017

    • Author(s)
      Hiroyuki Awano
    • Organizer
      IEEE, Progress in electromagnetics Research Symposium
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Enhancement of Dzyaloshinsky Moriya interaction in TbFeCo/Co/Pt magnetic layer wires by manipulating Co thin layer thickness2017

    • Author(s)
      Hiroyasu Kondo, Yuichiro Kurokawa, Hiroyuki Awano
    • Organizer
      IEEE, International symposium on advanced magnetic materials and applications
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Enhancement of current induced-domain wall motion in Tb/Co multilayers sandwiched between heavy metal with opposite spin hall angles2017

    • Author(s)
      Pham Van Thach, Do Bang, Hiroyuki Awano
    • Organizer
      IEEE, International symposium on advanced magnetic materials and applications
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] TbFeCo/Pt 磁性細線のヘテロ界面に Co 層を挿入したときのスピン軌道相互作用の影響2017

    • Author(s)
      近藤 広泰,黒川 雄一郎,粟野 博之
    • Organizer
      IEEE Magnetics Society 名古屋支部若手研究会
    • Related Report
      2017 Annual Research Report
  • [Presentation] (Tb/Co)/Ptヘテロ界面磁性細線の電流磁壁駆動2017

    • Author(s)
      Do Bang, 鷲見聡、粟野博之
    • Organizer
      電気学会マグネティックス研究会
    • Related Report
      2017 Annual Research Report
  • [Presentation] フレキシブルナノインプリントプラスチック基板を用いたバルクスピントルク磁化反転2017

    • Author(s)
      粟野博之、浅利司、柴田凌輔
    • Organizer
      電子情報通信学会Technical Reports
    • Related Report
      2017 Annual Research Report
  • [Remarks] 豊田工業大学 情報記録工学研究室

    • URL

      https://www.toyota-ti.ac.jp/Lab/Zairyo/5z70/index.html

    • Related Report
      2019 Annual Research Report

URL: 

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

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