Development of control method for pure spin-current

• Project/Area Number: 22860045
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Applied materials science/Crystal engineering
• Research Institution: Kyushu University
• Principal Investigator: YAKATA Satoshi 九州大学, 稲盛フロンティア研究センター, 特任助教 (00585929)
• Project Period (FY): 2010 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥3,146,000 (Direct Cost: ¥2,420,000、Indirect Cost: ¥726,000); Fiscal Year 2011: ¥1,508,000 (Direct Cost: ¥1,160,000、Indirect Cost: ¥348,000); Fiscal Year 2010: ¥1,638,000 (Direct Cost: ¥1,260,000、Indirect Cost: ¥378,000)
• Keywords: スピンエレクトロニクス / 純スピン流純スピン流 / 非局所スピンバルブ / スピン流 / スピン吸収 / 磁気異方性 / スピン注入

Research Abstract

We prepared ferromagnet/Non-ferromagnet/ferromagnet Lateral spin-valve(LSV) structure and succeeded to improve in spin-current generation. We also succeeded to control pure-spin current by placing spin-absorber(ferromagnetic metal such as NiFe alloy) in LSV.

Research Products

• [Journal Article] Formations of magnetic vortices in a chain array of triangle Py dots and an isosceles triangle Py dot (2012)
  • Author(s): M. Miyata, K. Kiseki, S. Yakata, H. Wada, and T. Kimura
  • Journal Title: J. Appl. Phys. Volume: 111
• [Journal Article] Formations of magnetic vortices in a chain array of triangle Py dots and an isosceles triangle Py dot (2012)
  • Author(s): M.Miyata, K.Kiseki, S.Yakata, H.Wada, T.Kimura
  • Journal Title: J.Appl.Phys. Volume: 111 Issue: 7
  • DOI: 10.1063/1.3673349
  • Peer Reviewed
• [Journal Article] Chirality control of magnetic vortex in a square Py dot using current-induced Oersted field (2012)
  • Author(s): 家形諭, 宮田真彦, 本多周太, 伊藤博介, 和田裕文, 木村崇
  • Journal Title: Applied Physics Letters Volume: 99 Issue: 24 Pages: 242507-242507
  • DOI: 10.1063/1.3669410
  • Peer Reviewed
• [Journal Article] Chirality control of magnetic vortex in a square Py dot using current-induced Oersted field (2011)
  • Author(s): S. Yakata, M. Miyata, S. Honda, H. Itoh, H. Wada, and T. Kimura
  • Journal Title: Appl. Phys. Lett. Volume: 99 Pages: 242507-242507
• [Journal Article] Transport properties of pure spin currents in a polycrystalline Gd wire (2011)
  • Author(s): S. Nonoguchi, Y. Ando, S. Yakata, and T. Kimura
  • Journal Title: IEEE Trans. Magn. Volume: 47 Pages: 2750-2752
• [Journal Article] Static and dynamical properties of a magnetic vortex in a regular polygonal nanomagnet (2011)
  • Author(s): M. Miyata, S. Nonoguchi, S. Yakata, H. Wada, and T. Kimura
  • Journal Title: IEEE Trans. Magn. Volume: 47 Pages: 2505-2507
• [Journal Article] Control of Magnetic Vortex Chirality in a Regular Pentagonal Permalloy Nanomagnet Using In-plane Magnetic Field (2011)
  • Author(s): M. Miyata, S. Yakata, T. Kimura, and H. Wada
  • Journal Title: J. Magn. Soc. Jpn. Volume: 35 Pages: 216-219
  • NAID: 130000677006
• [Journal Article] Transport properties of pure spin currents in a polycrystalline Gd wire (2011)
  • Author(s): S.Nonoguchi, Y.Ando, et.al.
  • Journal Title: IEEE TRANSACTIONS on magnetics Volume: 47 Issue: 10 Pages: 2750-2752
  • DOI: 10.1109/tmag.2011.2158407
  • Peer Reviewed
• [Journal Article] Static and dynamical properties of a magnetic vortex in a regular polygonal nanomagnet (2011)
  • Author(s): M.Miyata, S.Nonoguchi, S.Yakata, H.Wada, T.Kimura
  • Journal Title: IEEE Trans.Magn. Volume: 47 Issue: 10 Pages: 2505-2507
  • DOI: 10.1109/tmag.2011.2158408
  • Peer Reviewed
• [Journal Article] Control of Magnetic Vortex Chirality in a Regular Pentagonal Permalloy Nanomagnet Using In-plane Magnetic Field (2011)
  • Author(s): M.Miyata, S.Yakata, T.Kimura, H.Wada
  • Journal Title: Journal of the Magnetics Society of Japan Volume: 35 Issue: 3 Pages: 216-219
  • DOI: 10.3379/msjmag.1104R009
  • NAID: 130000677006
  • ISSN: 1882-2924, 1882-2932
  • Peer Reviewed
• [Journal Article] Optimization of cleaning condition of Permalloy/Cu interface for efficient spin injection (2010)
  • Author(s): S.Yakata, Y.Ando, T.Kimura
  • Journal Title: IEEE e-Journal Pages: 126-128
  • Peer Reviewed
• [Journal Article] Control of vortex chirality in polygonal nanomagnets (2010)
  • Author(s): M.Miyata, S.Yakata, M.Hara, H.Wada, T.Kimura
  • Journal Title: IEEE e-Journal Pages: 1878-1880
  • Peer Reviewed
• [Journal Article] Control of vortex chirality in regular polygonal nanomagnets using in-plane magnetic field (2010)
  • Author(s): S.Yakata, M.Miyata, S.Nonoguchi, H.Wada, T.Kimura
  • Journal Title: Appl.Phys.Lett. Volume: 97
  • NAID: 120005227379
  • Peer Reviewed
• [Journal Article] Enhancement of Thermal Stability Using Ferromagnetically Coupled Synthetic Free Layers in MgO-Based Magnetic Tunnel Junctions (2010)
  • Author(s): S.Yakata, H.Kubota, T.Seki, K.Yakushiji, A.Fukushima, S.Yuasa, K.Ando
  • Journal Title: IEEE Trans.Magn. Volume: 34 Pages: 316-322
  • Peer Reviewed
• [Presentation] Noise-induced Synchronization in Spin Torque Nano Oscillators (2011)
  • Author(s): K. Nakada, S. Yakata, T. Kimura
  • Organizer: 56th Annual Conference on Magnetism and Magnetic Materials
  • Place of Presentation: USA, Arizona
  • Year and Date: 2011-11-03
• [Presentation] Magnetic properties of double vortices stabilized in isosceles triangular ferromagnetic dots (2011)
  • Author(s): M. Miyata, S. Yakata, H. Wada, T. Kimura
  • Organizer: 56th Annual Conference on Magnetism and Magnetic Materials
  • Place of Presentation: USA, Arizona
  • Year and Date: 2011-11-03
• [Presentation] Stochastic state transition of a spin torque nano oscillator (2011)
  • Author(s): K. Nakada, S. Yakata, T. Kimura
  • Organizer: International Conference on Solid State Devices and Materials
  • Place of Presentation: Japan, Aichi
  • Year and Date: 2011-09-30
• [Presentation] 多角微小強磁性体中に安定化する磁気渦の動的特性 (2011)
  • Author(s): 宮田真彦,鬼石宏平,家形諭,和田裕文,木村崇
  • Organizer: 第35回日本磁気学会学術講演会
  • Place of Presentation: Japan, Niigata
  • Year and Date: 2011-09-27
• [Presentation] Control of vortex chirality using DC current injection (2011)
  • Author(s): M. Miyata, S. Yakata, H. Wada and T. Kimura
  • Organizer: 6th International School and Conference on Spintronics and Quantum Information Technology
  • Place of Presentation: Japan, Matsue
  • Year and Date: 2011-08-05
• [Presentation] Electrical detection of vortex core polarity in a polygonal nanomagnet (2011)
  • Author(s): M. Miyata, K. Kiseki, S. Yakata, H. Wada and T. Kimura
  • Organizer: 6th International School and Conference on Spintronics and Quantum Information Technology
  • Place of Presentation: Japan, Matsue
  • Year and Date: 2011-08-05
• [Presentation] Control of vortex chirality using DC current injection (2011)
  • Author(s): M.Miyata, S.Yakata, H.Wada, T.Kimura
  • Organizer: 6th International School and Conference on Spintronics and Quantum Information Technoloey (SPINTECH6)
  • Place of Presentation: Japan, Matsue
  • Year and Date: 2011-08-05
• [Presentation] Electrical detection of vortex core polarity in a polygonal nanomagnet (2011)
  • Author(s): M.Miyata, K.Kiseki, S.Yakata, H.Wada, T.Kimura
  • Organizer: 6th International School and Conference on Spintronics and Quantum Information Technology (SPINTECH6)
  • Place of Presentation: Japan, Matsue
  • Year and Date: 2011-08-05
• [Presentation] Efficient manipulations of pure spin currents using V-shape ferromagnetic wires (2011)
  • Author(s): S. Nonoguchi, Y. Ando, S. Yakata and T. Kimura
  • Organizer: 6th International School and Conference on Spintronics and Quantum Information Technology
  • Place of Presentation: Japan, Matsue
  • Year and Date: 2011-08-03
• [Presentation] Pure spin current injection into polycrystalline Gd (2011)
  • Author(s): S. Nonoguchi, Y. Ando, S. Yakata and T. Kimura
  • Organizer: 6th International School and Conference on Spintronics and Quantum Information Technology
  • Place of Presentation: Japan, Matsue
  • Year and Date: 2011-08-03
• [Presentation] Efficient manipulations of pure spin currents using V-shape ferromagnetic wires (2011)
  • Author(s): S.Nonoguchi, Y.Ando, S.Yakata, T.Kimura
  • Organizer: 6th International School and Conference on Spintronics and Quantum Information Technology (SPINTECH6)
  • Place of Presentation: Japan, Matsue
  • Year and Date: 2011-08-03
• [Presentation] Pure spin current injection into polycrystalline Gd (2011)
  • Author(s): S.Nonoguchi, Y.Ando, S.Yakata, T.Kimura
  • Organizer: 6th International School and Conference on Spintronics and Quantum Information Technology (SPINTECH6)
  • Place of Presentation: Japan, Matsue
  • Year and Date: 2011-08-03
• [Presentation] Transport properties of pure spin currents in a polycrystalline Gd wire (2011)
  • Author(s): S. Nonoguchi, Y. Ando, S. Yakata and T. Kimura
  • Organizer: International Magnetic Conference 2011
  • Place of Presentation: Taiwan, Taipei
  • Year and Date: 2011-04-26
• [Presentation] Static and dynamic properties of a magnetic vortex in a regular polygonal nanomagnet (2011)
  • Author(s): M. Miyata, S. Nonoguchi, S. Yakata, H. Wada, and T. Kimura
  • Organizer: International Magnetic Conference 2011
  • Place of Presentation: Taiwan, Taipei
  • Year and Date: 2011-04-26
• [Presentation] Transport properties of pure spin currents in a polycrystalline Gd wire (2011)
  • Author(s): S.Nonoguchi, Y.Ando, S.Yakata, T.Kimura
  • Organizer: International Magnetic Conference 2011 (Intermag2011)
  • Place of Presentation: Taiwan, Taipei
  • Year and Date: 2011-04-26
• [Presentation] Static and dynamic properties of a magnetic vortex in a regular polygonal nanomagnet (2011)
  • Author(s): M.Miyata, S.Nonoguchi, S.Yakata, H.Wada, T.Kimura
  • Organizer: International Magnetic Conference 2011 (Intermag2011)
  • Place of Presentation: Taiwan, Taipei
  • Year and Date: 2011-04-26
• [Presentation] 純スピン流注入により誘導されるループ電流とその検出 (2011)
  • Author(s): 野々口誠二,安藤裕一郎,家形諭,木村崇
  • Organizer: 第66回日本物理学会年次大会
  • Place of Presentation: 新潟
  • Year and Date: 2011-03-26
• [Presentation] 多角微小強磁性体の高周波磁化特性 (2011)
  • Author(s): 宮田真彦,家形諭,木村崇,和田裕文
  • Organizer: 第66回日本物理学会年次大会
  • Place of Presentation: 新潟
  • Year and Date: 2011-03-26
• [Presentation] Optimization of cleaning condition of Permalloy/Cu interface for efficient spin injection (2010)
  • Author(s): S. Yakata, Y. Ando and T. Kimura
  • Organizer: IEEE TENCON2010
  • Place of Presentation: Fukuoka
  • Year and Date: 2010-11-22
• [Presentation] Control of vortex chirality in polygonal nanomagnets (2010)
  • Author(s): M. Miyata, S. Yakata, M. Hara, H. Wada and T. Kimura
  • Organizer: IEEE TENCON2010
  • Place of Presentation: Fukuoka
  • Year and Date: 2010-11-22
• [Presentation] Thermal stability and switching current of ferromagnetically coupled CoFeB/Ru/CoFeB synthetic free layer (2010)
  • Author(s): S.Yakata, H.Kubota, T.Seki, K.Yakushiji, A.Fukushima, S.Yuasa, K.Ando
  • Organizer: ISAMMA2010
  • Place of Presentation: Miyagi
  • Year and Date: 2010-07-13