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Computer simulation of magnetic vortex core switching by spin current

Planned Research

Project AreaCreation and control of spin current
Project/Area Number 19048021
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionThe University of Electro-Communications

Principal Investigator

NAKATANI Yoshinobu (YOSHINOBU Nakatani)  The University of Electro-Communications, 大学院・情報理工学研究科, 教授 (20207814)

Project Period (FY) 2007 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥16,600,000 (Direct Cost: ¥16,600,000)
Fiscal Year 2010: ¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 2009: ¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 2008: ¥4,700,000 (Direct Cost: ¥4,700,000)
Fiscal Year 2007: ¥3,900,000 (Direct Cost: ¥3,900,000)
Keywordsスピン流 / 磁化反転 / シミュレーション / 高速化 / GPU / 計算精度
Research Abstract

Recently, there are many works relating to the vortex core dynamics by spin current. In this research the mechanism of the vortex core rotation and switching by spin current are investigated by using computer simulation. We also investigate the conditions to use this mechanism for magnetic devices. Because these simulation requires huge amount of the computation time, we propose the method to accelerate the calculation speed by using the graphic processing unit.

Report

(6 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report   Self-evaluation Report ( PDF )
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (37 results)

All 2011 2010 2009 2008

All Journal Article (12 results) (of which Peer Reviewed: 12 results) Presentation (25 results)

  • [Journal Article] Fast Micromagnetic Simulation of Vortex2011

    • Author(s)
      T.Sato, Y.Nakatani.
    • Journal Title

      Journal of the Magnetics Society of Japan 35

      Pages: 163-163

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Current-induced switching of magnetic vortex core in ferromagnetic elliptical disks2010

    • Author(s)
      K.Yamada, S.Kasai, Y.Nakatani, K.Kobayashi, T.Ono
    • Journal Title

      Applied Physics Letters 96

      Pages: 192508-192508

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Current-induced switching of magnetic vortex core in ferromagnetic elliptical disks2010

    • Author(s)
      K.Yamada, S.Kasai, Y.Nakatani, K.Kobayashi., T.Ono
    • Journal Title

      Applied Physics Letters

      Volume: 96 Pages: 192507-192507

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Current-Induced Switching of Magnetic Vortex Core in Ferromagnetic Ellptical Disks2010

    • Author(s)
      K. Yamada, S. Kasai, Y. Nakatani, K. Kobayashi, T. Ono
    • Journal Title

      (accepted in APL)

    • Related Report
      2009 Self-evaluation Report
    • Peer Reviewed
  • [Journal Article] Probing the spin polarization of current by soft X-ray imaging of current-induced magnetic vortex dynamics2008

    • Author(s)
      S.Kasai.P.Fischer, Mi-Y.Im, K.Yamada, Y.Nakatani, K.Kobayashi, T.Ono
    • Journal Title

      Physical Review Letters 101

      Pages: 237203-237203

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Switching magnetic vortex core by a single nanosecond current pulse2008

    • Author(s)
      K.Ymada, S.Kasai, Y.Nakatani, K.Kobayashi, T.Ono
    • Journal Title

      Applied Physics Letters 93

      Pages: 152502-152502

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Electrical rectification effect in single domain magnetic microstrips : A micromagnetics-based analysis2008

    • Author(s)
      A.Thiaville, Y.Nakatani
    • Journal Title

      Journal of Applied Physics 104

      Pages: 93701-93701

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Probing the spin polarization of current by soft X-ray imaging of current-induced magnetic vortex dynamics2008

    • Author(s)
      S. Kasai, P. Fischer, Mi-Y. Im, K. Yamada, Y. Nakatani, K. Kobayashi, H. Kohno, T. Ono
    • Journal Title

      Phys. Rev. Lett. 101

      Pages: 237203-237203

    • Related Report
      2009 Self-evaluation Report
    • Peer Reviewed
  • [Journal Article] Switching magnetic vortex core by a single nanosecond current pulse2008

    • Author(s)
      K. Yamada. S. Kasai, Y. Nakatani, K. Kobayashi, T. Ono
    • Journal Title

      Appl. Phys. Lett 93

      Pages: 152502-152502

    • Related Report
      2009 Self-evaluation Report
    • Peer Reviewed
  • [Journal Article] Electrical rectification effect in single domain magnetic microstris : A micromagnetics-based analysis2008

    • Author(s)
      A. Thiaville, and Y. Nakatani
    • Journal Title

      Journal of Applied Physics 104

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Switching magnetic vortex core by a single nanosecond current pulse2008

    • Author(s)
      K. Yamada, S. Kasai, Y. Nakatani, K. Kobayashi, and T. Ono
    • Journal Title

      Applied physics Letter 93

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nucleation and duynamics of magnetic vortices under spin-polarized current2008

    • Author(s)
      Y. Nakatani, J. Shibata, G. Tatara, H. Kohno, A. Thiaville, and J. Miltat
    • Journal Title

      Physical Review B. 77

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] Fast Vortex Core Motion Simulation by GPU2010

    • Author(s)
      T.Sato, Y.Nakatani
    • Organizer
      International Connference of AUMS
    • Place of Presentation
      Jeju, Korea
    • Year and Date
      2010-12-07
    • Related Report
      2010 Annual Research Report
  • [Presentation] The Effect of Oersted Field on Magnetic Vortex Core Gyration2010

    • Author(s)
      T.Sato, Y.Nakatani, T.Ono
    • Organizer
      International Connference of AUMS
    • Place of Presentation
      Jeju Korea
    • Year and Date
      2010-12-06
    • Related Report
      2010 Final Research Report
  • [Presentation] The Effect of Oersted Field on Magnetic Vortex Core Gyration2010

    • Author(s)
      T.Sato, Y.Nakatani, T.Ono
    • Organizer
      International Connference of AUMS
    • Place of Presentation
      Jeju, Korea
    • Year and Date
      2010-12-06
    • Related Report
      2010 Annual Research Report
  • [Presentation] スピン電流による磁気渦回転運動に対する電流磁界の効果2010

    • Author(s)
      佐藤知徳, 仲谷栄伸
    • Organizer
      第34回日本応用磁気学会学術講演会
    • Place of Presentation
      つくば国際会議場(茨城県)
    • Year and Date
      2010-09-04
    • Related Report
      2010 Annual Research Report
  • [Presentation] Velocity of vortex core switching in elliptic dot2010

    • Author(s)
      Tomonori Sato, Yoshinobu Nakatani, K. Yamada, T., Ono
    • Organizer
      11th Joint MMM-Intermag Conference
    • Place of Presentation
      Marriott Washington Wardman Park (米国、ワシントンDC)
    • Year and Date
      2010-01-23
    • Related Report
      2009 Self-evaluation Report
  • [Presentation] Velocity of vortex core switching in elliptic dot2010

    • Author(s)
      Tomonori Sato, Yoshinobu Nakatani, K.Yamada, T., Ono
    • Organizer
      11^<th> Joint MMM-Intermag Conference
    • Place of Presentation
      Marriott Washington Wardman Park(米国、ワシントンDC)
    • Year and Date
      2010-01-23
    • Related Report
      2009 Annual Research Report
  • [Presentation] Velocity of the vortex core switching in elliptic dots2010

    • Author(s)
      T.Sato, Y.Nakatani, K.Yamada, T.Ono
    • Organizer
      11th Joint MMM-Intermag Conference
    • Place of Presentation
      Washington USA
    • Year and Date
      2010-01-22
    • Related Report
      2010 Final Research Report
  • [Presentation] Effect of the calculation precision in micromagnetic simulation2010

    • Author(s)
      佐藤知徳、仲谷栄伸
    • Organizer
      11^<th> Joint MMM-Intermag Conference
    • Place of Presentation
      Marriott Washington Wardman Park(米国、ワシントンDC)
    • Year and Date
      2010-01-21
    • Related Report
      2009 Annual Research Report
  • [Presentation] Effect of the calculation precition in micromagnetic simulation2010

    • Author(s)
      T.Sato, Y.Nakatani
    • Organizer
      11th Joint MMM-Intermag Conference
    • Place of Presentation
      Washington USA
    • Year and Date
      2010-01-20
    • Related Report
      2010 Final Research Report
  • [Presentation] Fast vortex core motion simulation by GPU2009

    • Author(s)
      佐藤知徳、仲谷栄伸
    • Organizer
      Nanomagnetism, Spin Electronics and Quantum Optics
    • Place of Presentation
      Brazilian Center for Phhysics Research(ブラジル、リオデジャネイロ)
    • Year and Date
      2009-11-12
    • Related Report
      2009 Annual Research Report
  • [Presentation] Vortex コアの反転時間への熱揺らぎの影響2009

    • Author(s)
      佐藤知徳、仲谷栄伸
    • Organizer
      第33回日本磁気学会学術講演会
    • Place of Presentation
      長崎大学(長崎県)
    • Year and Date
      2009-09-15
    • Related Report
      2009 Annual Research Report
  • [Presentation] GPUを利用した磁気 Vortex 反転シミュレーションの高速化2009

    • Author(s)
      佐藤知徳、仲谷栄伸
    • Organizer
      第33回日本磁気学会学術講演会
    • Place of Presentation
      長崎大学(長崎県)
    • Year and Date
      2009-09-15
    • Related Report
      2009 Annual Research Report
  • [Presentation] Fast micromagnetic simulation by cell broadband engine2009

    • Author(s)
      佐藤知徳、仲谷栄伸
    • Organizer
      International Conference on Magnetism 2009
    • Place of Presentation
      Congress Center Karlsruhe(ドイツ、カールスルーエ)
    • Year and Date
      2009-07-30
    • Related Report
      2009 Annual Research Report
  • [Presentation] Effect of the thermal fluctuation on the current induced vortex core switching time2009

    • Author(s)
      Tomonori Sato, Yoshinobu Nakatani
    • Organizer
      International Conference on Magnetism 2009
    • Place of Presentation
      Congress Center Karlsruhe(ドイツ、カールスルーエ)
    • Year and Date
      2009-07-28
    • Related Report
      2009 Annual Research Report 2009 Self-evaluation Report
  • [Presentation] Effect of the thermal fluctuation on the current induced vortex core switching time2009

    • Author(s)
      T.Sato, Y.Nakatani
    • Organizer
      International Colloquim on Magnetic Films and Surfaces
    • Place of Presentation
      Berlin Germany
    • Year and Date
      2009-07-20
    • Related Report
      2010 Final Research Report
  • [Presentation] Pulse current switching of a vortex core in a nanodot: a micromagnetic study2009

    • Author(s)
      Y.Nakatani, A.Thiaville, K, Yamada, S.Kasai, K.Kobayashi, T.Ono
    • Organizer
      International Colloquim on Magnetic Films and Surfaces
    • Place of Presentation
      Berlin Germany
    • Year and Date
      2009-07-20
    • Related Report
      2010 Final Research Report
  • [Presentation] Effect of the thermal fluctuation on the current induced vortex core switching time2009

    • Author(s)
      佐藤知徳、仲谷栄伸
    • Organizer
      20^<th> International Colloquium on Magnetic Films and Surfaces
    • Place of Presentation
      Freie Universitat in Dahlem(ドイツ、ベルリン)
    • Year and Date
      2009-07-20
    • Related Report
      2009 Annual Research Report
  • [Presentation] Fast micromagnetic simulation by cell broadband engine2009

    • Author(s)
      T.Sato, Y.Nakatani
    • Organizer
      INTERMAG CONFERENC2009
    • Place of Presentation
      Sacrament USA
    • Year and Date
      2009-05-05
    • Related Report
      2010 Final Research Report
  • [Presentation] Fast micromagnetic simulation by a graphic processor unit2009

    • Author(s)
      M.Tate, T.Sato, Y.Nakatani
    • Organizer
      INTERMAG CONFERENC2009
    • Place of Presentation
      Sacrament USA
    • Year and Date
      2009-05-05
    • Related Report
      2010 Final Research Report
  • [Presentation] Fast micromagnetic simulation by cell broadband engine2009

    • Author(s)
      佐藤知徳、仲谷栄伸
    • Organizer
      International Magnetics conference 2009
    • Place of Presentation
      Sacrament convention center(米国、サクラメント)
    • Year and Date
      2009-05-05
    • Related Report
      2009 Annual Research Report
  • [Presentation] Effect of the ellipticity on the switching current and field of the vortex core in an elliptic nanodot2008

    • Author(s)
      Y.Nakatani, T.Ono
    • Organizer
      Magnetic single nano-object workshop
    • Place of Presentation
      Nancy France
    • Year and Date
      2008-11-27
    • Related Report
      2010 Final Research Report
  • [Presentation] Effect of the ellipticity on the switching current and field of the vortexcore in an elliptic nanodot2008

    • Author(s)
      Y. Nakatani, and T. Ono
    • Organizer
      Magnetic Small Nano-Object Workshop and School
    • Place of Presentation
      フランス共和国ナンシー市
    • Year and Date
      2008-11-26
    • Related Report
      2008 Annual Research Report
  • [Presentation] Reduction of the vortex core switching current with an elliptic nanodot2008

    • Author(s)
      Y.Nakatani, A.Thiaville, K.Yamada, S.Kasai, K.Kobayashi, T.Ono
    • Organizer
      53th Annual Conference on Magnetism and Magnetic Material
    • Place of Presentation
      Austin USA
    • Year and Date
      2008-11-12
    • Related Report
      2010 Final Research Report
  • [Presentation] Reduction of the vortex core switching current with an elliptic nanodot2008

    • Author(s)
      Y. Nakatani, and T. Ono
    • Organizer
      53^<rd> Magnetism and Magnetic Materials Conference
    • Place of Presentation
      米国テキサス州
    • Year and Date
      2008-11-12
    • Related Report
      2008 Annual Research Report
  • [Presentation] Cell Broadband Engine による高速シミュレーション2008

    • Author(s)
      佐藤知徳、仲谷栄伸
    • Organizer
      第32回日本磁気学会学術講演会
    • Place of Presentation
      仙台
    • Year and Date
      2008-09-15
    • Related Report
      2008 Annual Research Report

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Published: 2007-04-01   Modified: 2018-03-28  

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