study of magnetic properties in the vicinity of the spin accumulation interface

• Project/Area Number: 23681032
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Microdevices/Nanodevices
• Research Institution: Kyushu Institute of Technology (2012-2013); The Institute of Physical and Chemical Research (2011)
• Principal Investigator: FUKUMA Yasuhiro 九州工業大学, 若手研究者フロンティア研究アカデミー, 准教授 (90513466)
• Project Period (FY): 2011-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥27,170,000 (Direct Cost: ¥20,900,000、Indirect Cost: ¥6,270,000); Fiscal Year 2013: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2012: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2011: ¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
• Keywords: スピン蓄積 / スピン流 / スピン注入 / スピントロニクス / スピンホール効果

Research Abstract

We show that lateral spin valves with NiFe/MgO/Ag junctions enables efficient spin injection, which leads to the spin accumulation signal increasing 100-fold. The effective magnetic field of several Tesla in the vicinity of the interface may be a powerful tool to investigate and control spin-related phenomena in various materials. 5d iridium oxide IrO2 and ferromagnetic semiconductor EuS are attached to the Ag with large spin accumulation and then spin current is injected into these materials. Large magnitude of spin Hall effect and a change of the sign of the conversion of spin current to charge current near its Curie temperature are observed.

Research Products

• [Journal Article] Effect of anisotropic spin absorption on the Hanle effect in lateral spin valves (2014)
  • Author(s): H. Idzuchi, Y. Fukuma, S. Takahashi, S. Maekawa, Y. Otani
  • Journal Title: Phys. Rev. B Volume: 89 Issue: 8 Pages: 0813081-5
  • DOI: 10.1103/physrevb.89.081308
  • Peer Reviewed
• [Journal Article] 5d iridium oxide as a material for spin current detection (2013)
  • Author(s): K. Fujiwara, Y. Fukuma, J. Matsuno, H. Idzuchi, Y. Niimi, Y. Otani, H. Takagi
  • Journal Title: Nat. Commun. Volume: 4 Issue: 1 Pages: 28931-6
  • DOI: 10.1038/ncomms3893
  • Peer Reviewed
• [Journal Article] Impact of interface properties on spin accumulation in dual-injection lateral spin valves. (2013)
  • Author(s): H. Idzuchi, S. Karube, Y. Fukuma, T. Aoki, and Y. Otani
  • Journal Title: Appl. Phys. Lett. Volume: 103 Issue: 16 Pages: 1624031-4
  • DOI: 10.1063/1.4824897
  • Peer Reviewed
• [Journal Article] Spin injection properties in trilayer graphene lateral spin valves (2013)
  • Author(s): Y. P. Liu, H、Idzuchi. Y. Fukuma, O Rousseau. Y Otani and W S
  • Journal Title: Appl. Phys. Lett. Volume: 102 Issue: 3 Pages: 0331051-4
  • DOI: 10.1063/1.4776699
  • Peer Reviewed
• [Journal Article] Anomalous Dressing of Dirac Fermions in the Topological Surface State of Bi2Se3, Bi2Te3, and Cu-Doped Bi2Se3 (2013)
  • Author(s): T. Kondo
  • Journal Title: Phys. Rev. Lett Volume: 110 Issue: 6 Pages: 32002-32002
  • DOI: 10.1103/physrevlett.112.068103
  • Peer Reviewed
• [Journal Article] Towards coherent spin precession in pure-spin current (2012)
  • Author(s): H. Idzuchi. Y. Fukuma and Y. Otani
  • Journal Title: Sci. Rep. Volume: 2 Issue: 1 Pages: 6281-5
  • DOI: 10.1038/srep00628
  • Peer Reviewed
• [Journal Article] "Spin relaxation mechanism in silver nanowires covered with MgO protection layer", (2012)
  • Author(s): H. Idzuchi, Y. Fukuma, L. Wang, and Y. Otani
  • Journal Title: Appl. Phys. Lett. Volume: 101 Issue: 2 Pages: 0224151-4
  • DOI: 10.1063/1.4737001
  • Peer Reviewed
• [Journal Article] Temperature Evolution of Spin-Polarized Electron Tunneling in Silicon Nanowire-Permalloy Lateral Spin Valve System (2011)
  • Author(s): J.Tarun, S.Huang, Y.Fukuma, H.Idzuchi, Y.Otani, N.Fukata, K.Ishibashi, S.Oda
  • Journal Title: Applied Physics Express Volume: 5 Issue: 4 Pages: 0450011-3
  • DOI: 10.1143/apex.5.045001
  • Peer Reviewed
• [Journal Article] Giant enhancement of spin accumulation and long-distance spin precession in metallic lateral spin valves (2011)
  • Author(s): Y.Fukuma, L.Wang, H.Idzuchi, S.Takahashi, S.Maekawa, Y.Otani
  • Journal Title: Nature Materials Volume: 12 Issue: 7 Pages: 30461-5
  • DOI: 10.1038/nmat3046
  • Peer Reviewed
• [Journal Article] Effect of Annealing on Interfacial Spin Polarization and Resistance in Permalloy/MgO/Ag Lateral Spin Valves (2011)
  • Author(s): L.Wang, Y.Fukuma, H.Idzuchi, Y.Otani
  • Journal Title: Applied Physics Express Volume: 4 Issue: 9 Pages: 0930041-3
  • DOI: 10.1143/apex.4.093004
  • Peer Reviewed
• [Journal Article] Spin injection into magnesium nanowire (2011)
  • Author(s): H.Idzuchi, Y.Fukuma, L.Wang, Y.Otani
  • Journal Title: IEEE.Trans.on Magnetics Volume: 47 Issue: 6 Pages: 1545-1548
  • DOI: 10.1109/tmag.2011.2108272
  • Peer Reviewed
• [Presentation] EuSGd細線におけるスピン(異常)ホール効果の温度依存性 (2014)
  • Author(s): 井土 宏, 福間 康裕, 近藤 浩太, 木俣 基, 大谷 義近
  • Organizer: 日本物理学会第69回年次大会
  • Place of Presentation: 東海大学
• [Presentation] Ag/Bi2O3界面誘起スピン流 電流変換の観測 (2014)
  • Author(s): 軽部 修太郎, 近藤 浩太, 井土 宏, 新見 康洋, 福間 康裕, 大谷 義近
  • Organizer: 日本物理学会第69回年次大会
  • Place of Presentation: 東海大学
• [Presentation] Long distance spin precession to characterize dynamic properties (2013)
  • Author(s): Y. Fukuma, H. Idzuchi, Y. Otani
  • Organizer: Euro-Asian Symposium : Trends in Magnetism
  • Place of Presentation: Vladivostok Russia
  • Year and Date: 2013-09-20
  • Invited
• [Presentation] Long distance spin precession to characterize dynamic properties (2013)
  • Author(s): Y. Fukuma, Hidzuchi, Y. Otani
  • Organizer: Euro-Asian Symposium "Trends in Magnetism":Nanomagnetism
  • Place of Presentation: Vladivostok, Russia
  • Invited
• [Presentation] Hanle velocimetry of diffusive spins in lateral spin valves (2013)
  • Author(s): Y. Otani, H. Idzuchi, Y. Fukuma
  • Organizer: The 3rd International Symposium on Advanced Magnetic Materials and Applications
  • Place of Presentation: Taichung, Taiwan
  • Invited
• [Presentation] Non-local Hanle effect as a means of velocimetry for diffusive spins in metallic lateral spin valves (2013)
  • Author(s): H. Idzuchi, Y. Fukuma, Y. Otani
  • Organizer: The 8th International Symposium on Metallic Multilayers
  • Place of Presentation: Kyoto, Japan
• [Presentation] Electric field effect on spin diffusion in Permalloy/MgO/Ag lateral spin valves with HfO2 gate dielectrics (2013)
  • Author(s): S. Karube, H. Idzuchi, Y. Fukuma, Y. Otani
  • Organizer: The 8th International Symposium on Metallic Multilayers
  • Place of Presentation: Kyoto, Japan
• [Presentation] Effect of spin absorption on presession dynamics of pure spin currents in lateral spin valves (2013)
  • Author(s): H. Idzuchi, Y. Fukuma, Y. Otani
  • Organizer: The 12th Joint MMM/Intermag Conference
  • Place of Presentation: Chicago, USA
• [Presentation] 純スピン流の拡散速度に対するスピン吸収の影響 (2013)
  • Author(s): 井土 宏，福間 康裕，高橋 三郎, 前川 禎通, 大谷 義近
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学
• [Presentation] 非磁性銀細線中のスピン緩和に対する酸化ハフニウム表面保護層の影響 (2013)
  • Author(s): 軽部 修太郎，井土 宏，福間 康裕，大谷 義近
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学
• [Presentation] Giant enhancement of spin accumulation and long-distance spin precession in lateral spin valves (2012)
  • Author(s): Y. Fukuma
  • Organizer: Workshop on Innovative Nanoscale Devices and Systems
  • Place of Presentation: Hawaii USA
  • Year and Date: 2012-12-04
  • Invited
• [Presentation] Efficient generation of pure spin current in lateral spin valves (2012)
  • Author(s): Y. Fukuma, H. Idzuchi, Y. Otani
  • Organizer: 4th WUN international conference on spintronics
  • Place of Presentation: Sydney Australia
  • Year and Date: 2012-07-24
  • Invited
• [Presentation] 非磁性金属細線中のスピン緩和 (2012)
  • Author(s): 福間康裕, 井土宏, 大谷義近
  • Organizer: 日本磁気学会第183回研究会・第39回スピンエレクトロニクス専門研究会
  • Place of Presentation: 中央大学
  • Year and Date: 2012-03-07
  • Invited
• [Presentation] Giant spin accumulation and long-distance spin precession in metallic lateral spin valves (2012)
  • Author(s): Y. Fukuma
  • Organizer: APS March Meeting 2012
  • Place of Presentation: Boston USA
  • Year and Date: 2012-02-29
  • Invited
• [Presentation] Giant spin accumulation and long-distance spin precession in metallic lateral spin valves (2012)
  • Author(s): Y.Fukuma
  • Organizer: APS March Meeting 2012
  • Place of Presentation: 米国・ボストン(招待講演)
  • Year and Date: 2012-02-29
• [Presentation] Giant enhancement of spin accumulation and long-distance spin precession in lateral spin valves (2012)
  • Author(s): Y. Fukuma
  • Organizer: Workshop on Innovative Nanoscale Devices and Systems (WINDS)
  • Place of Presentation: Hawaii, USA
  • Invited
• [Presentation] Diffusive transport of pure spin current in lateral spin valves (2012)
  • Author(s): Y. Fukuma, H. Idzuchi, Y. Otani
  • Organizer: International Conference of the Asian Union of Magnetics Societies(ICAUMS)
  • Place of Presentation: Nara, Japan
• [Presentation] Enhanced spin accumulation in CoFe/MgO/Ag lateral spin valves (2012)
  • Author(s): H. Idzuchi, S. Karube, Y. Fukuma, Y. Otani
  • Organizer: International Conference of the Asian Union of Magnetics Societies(ICAUMS)
  • Place of Presentation: Nara, Japan
• [Presentation] Spin injection into trilayer graphene lateral spin valves (2012)
  • Author(s): Y. Liu, H. Idzuchi, Y. Fukuma, O. Rousseau, Y. Otani
  • Organizer: International Conference of the Asian Union of Magnetics Societies(ICAUMS)
  • Place of Presentation: Nara, Japan
• [Presentation] Efficient generation of pure spin current in lateral spin valves (2012)
  • Author(s): Y. Fukuma, H. Idzuchi, Y. Otani
  • Organizer: WUN-SPIN 2012
  • Place of Presentation: Sydney, Australia
  • Invited
• [Presentation] Coherence in collective spin precession in lateral spin valves (2012)
  • Author(s): H. Idzuchi, Y. Fukuma, and Y. Otani
  • Organizer: The 19th international conference on magnetism
  • Place of Presentation: Busan, Korea
• [Presentation] 面内スピンバルブ構造CoFe/MgO/Agにおけるスピン蓄積効果 (2012)
  • Author(s): 軽部 修太郎, 井土 宏, 福間 康裕, 大谷 義近
  • Organizer: 日本物理学会 2012年秋季大会
  • Place of Presentation: 横浜国立大学
• [Presentation] 純スピン流やスピン蓄積を用いた新機能性デバイスの創製に向けて (2011)
  • Author(s): 福間康裕
  • Organizer: IDEMA JAPAN 合同部会
  • Place of Presentation: 日立金属高輪和彊館
  • Year and Date: 2011-12-02
  • Invited
• [Presentation] 純スピン流やスピン蓄積を用いた新機能性デバイスの創製に向けて (2011)
  • Author(s): 福間康裕
  • Organizer: IDEMA JAPAN合同部会
  • Place of Presentation: 東京(招待講演)
  • Year and Date: 2011-12-02
• [Presentation] NiFe/MgO/Ag接合を用いた面内スピンバルブ構造におけるスピン蓄積信号の増大 (2011)
  • Author(s): 福間康裕, 王楽, 井土宏, 大谷義近
  • Organizer: 情報記録・情報ストレージ研究会、電気通信情報学会、磁気学会、映像情報メディア学会共催
  • Place of Presentation: 柏崎
  • Year and Date: 2011-10-13
  • Invited
• [Presentation] NiFe/MgO/Ag接合を用いた面内スピンバルブ構造におけるスピン蓄積信号の増大 (2011)
  • Author(s): 福間康裕, 王楽、井土宏、大谷義近
  • Organizer: 第43回ナノマグネティクス専門研究会
  • Place of Presentation: 新潟(招待講演)
  • Year and Date: 2011-10-13
• [Presentation] 非磁性金属細線中のスピン緩和機構 (2011)
  • Author(s): 福間康裕, 王楽, 井土宏, 大谷義近
  • Organizer: 第35回日本磁気学会学術講演会
  • Place of Presentation: 新潟
  • Year and Date: 2011-09-29
• [Presentation] NiFe/MgO/Ag面内スピンバルブにおけるスピン注入効率およびスピン緩和長の熱処理温度依存性 (2011)
  • Author(s): 福間康裕, 王楽, 井土宏, 大谷義近
  • Organizer: 日本物理学会2011年秋季大会
  • Place of Presentation: 富山
  • Year and Date: 2011-09-22
• [Presentation] Strongly enhanced spin accumulation by introducing MgO interface layer in non-local spin valves (2011)
  • Author(s): Y.Fukuma, L.Wang, H.Idzuchi, Y.Otani
  • Organizer: IEEE International Magnetics conference
  • Place of Presentation: 台湾・台北(招待講演)
  • Year and Date: 2011-04-25
• [Remarks] ホームページ等
  • URL: http://www.kyutech.ac.jp/professors/iizuka/i-12/i12-2/entry-1140.html