Current-induced domain wall motion in ferromagnetic semiconductors

• Project/Area Number: 20360001
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Applied materials science/Crystal engineering
• Research Institution: Tohoku University
• Principal Investigator: MATSUKURA Fumihiro 東北大学, 電気通信研究所, 准教授 (50261574)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000); Fiscal Year 2010: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2009: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2008: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
• Keywords: スピントロニクス / 強磁性半導体 / 電流誘起磁壁移動 / 磁界誘起磁壁移動 / スピントルク / スピン流 / 結晶成長

Research Abstract

We have investigated the domain wall related phenomena in (Ga, Mn)As and found that
(1)Universality class of domain wall creep motion in (Ga, Mn)As is governed by the surface roughness
(2)Electromotive force can be induced by the domain wall motion, which is a reciprocal effect of the current induced domain wall motion.

Research Products

• [Journal Article] Domain wall creep in (Ga, Mn)As (2010)
  • Author(s): A. Kanda, A. Suzuki, F. Matsukura, and H. Ohno
  • Journal Title: Appl. Phys. Lett Volume: 97 Issue: 3 Pages: 32504-32504
  • DOI: 10.1063/1.3467048
  • Peer Reviewed
• [Journal Article] Domain wall creep in (Ga,Mn) As (2010)
  • Author(s): A.Kanda, A.Suzuki, F.Matsukura, H.Ohno
  • Journal Title: Applied Physics Letters Volume: 97
  • Peer Reviewed
• [Journal Article] 強磁性半導体における磁壁の電流駆動 (2009)
  • Author(s): 千葉大地、山ノ内路彦、松倉文禮、大野英男
  • Journal Title: まぐね Volume: 4(8) Pages: 390-295
  • Peer Reviewed
• [Journal Article] 強磁性半導体における磁壁の電流駆動 (2009)
  • Author(s): 千葉大地・山ノ内路彦、松倉文礼、大野英男
  • Journal Title: まぐね 4 Pages: 390-395
  • Peer Reviewed
• [Presentation] Buffer layer dependence of magnetic domain wall creep in (Ga,Mn)As (2011)
  • Author(s): A.Suzuki, A.Kanda, F.Matsukura, H.Ohno
  • Organizer: The 1st CSIS International Symposium on Spintronics-based VLSIs and The 7th RIEC International Workshop on Spintronics
  • Place of Presentation: 仙台
  • Year and Date: 2011-02-03
• [Presentation] Buffer layer dependence of magnetic domain wall creep in (Ga, Mn)As (2011)
  • Author(s): A. Suzuki, A. Kanda, F. Matsukura, and H. Ohno
  • Organizer: The 1st CSIS International Symposium on Spintronics-based VLSIs and The 7th RIEC International Workshop on Spintronics
  • Place of Presentation: Sendai
• [Presentation] Asにおける電流誘起磁壁移動の膜厚依存性 (2010)
  • Author(s): 鈴木淳士、神田明典、松倉文禮、大野英男
  • Organizer: 第71回応用物理学会学術講演会
  • Place of Presentation: 長崎大学文教キャンパス
• [Presentation] Experimental aspects of carrier-induced ferromagnetic semiconductors (2009)
  • Author(s): F.Matsukura
  • Organizer: 5th Intl.School and Conf.on Spintronics and Quantum IT
  • Place of Presentation: クラクフ市、ポーランド
  • Year and Date: 2009-07-08
• [Presentation] (Ga, Mn)As中の磁壁の磁場誘起クリープ (2009)
  • Author(s): 神田明典
  • Organizer: 第56回応用物理学関係連合講演会
  • Place of Presentation: 筑波大学
  • Year and Date: 2009-03-30
• [Presentation] (Ga, Mn)As中の磁場誘起クリープのスケーリング指数 (2009)
  • Author(s): 神田明典
  • Organizer: The 13th Symposium on the Physics and Application of Spin-Related Phenomena in Semiconductors
  • Place of Presentation: 東北大学
  • Year and Date: 2009-01-27
• [Presentation] As中の磁壁の磁場誘起クリープ (2009)
  • Author(s): 神田明典、松倉文禮、大野英男
  • Organizer: 第56回応用物理学関係連合講演会
  • Place of Presentation: 筑波大学
• [Presentation] As中の磁場誘起クリープのスケーリング指数 (2009)
  • Author(s): 神田明典、松倉文禮、大野英男
  • Organizer: The 13th Symposium on the Physics and Application of Spin-Related Phenomena in Semiconductors
  • Place of Presentation: 東北大学電気通信研究所附属ナノ・スピン実験施設
• [Presentation] Magnetic Domain Wall Dynamics in (Ga, Mn) As (2008)
  • Author(s): 松倉文礼
  • Organizer: 1st Rennes-Sendai joint workshop on advanced materials and devices
  • Place of Presentation: 仏レンヌ
  • Year and Date: 2008-10-23
• [Presentation] Magnetic Domain Wall Dynamics in GaMnAs(招待講演) (2008)
  • Author(s): 松倉文礼
  • Organizer: International Conference on Solid State Devices and Materials
  • Place of Presentation: つくば
  • Year and Date: 2008-09-26
• [Presentation] 強磁性半導体:その物性と電流による磁壁駆動 (2008)
  • Author(s): 大野英男、松倉文禮
  • Organizer: 未踏・ナノデバイスデクノロジ第151委員会第84回研究会
  • Place of Presentation: 東京工業大学大岡山キャンパス
  • Year and Date: 2008-04-24