Spin current induced spin wave modulation and control of magnetic order

• Project/Area Number: 26289229
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Physical properties of metals/Metal-base materials
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: TANIYAMA Tomoyasu 東京工業大学, 科学技術創成研究院, 准教授 (10302960)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000); Fiscal Year 2016: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2015: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2014: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
• Keywords: スピン流 / 磁気秩序 / スピン波 / FeRh / 磁性 / スピンエレクトロニクス

Outline of Final Research Achievements

Effects of spin current on the magnetic order in high-quality B2 ordered FeRh alloy thin films and the spin wave transmission have been investigated. Injection of a spin-polarized current into FeRh across the Co/FeRh interface is shown to induce the antiferromagnetic-ferromagnetic phase transition of FeRh. Also, the long range transmission of spin waves over a distance of 27μm is demonstrated in ferromagnetic FeRh thin films and the damping constant of spin precession is found to be smaller than that of Permalloy.

Research Products

• [Int'l Joint Research] University of Maryland(米国)
• [Int'l Joint Research] Helmholtz-Zentrum-Dresden-Rossendorf(ドイツ)
• [Journal Article] Direct evidence for suppression of the Kondo effect due to pure spin current (2016)
  • Author(s): K. Hamaya, T. Kurokawa, S. Oki, S. Yamada, T. Kanashima, and T. Taniyama
  • Journal Title: Physical Review B: Rapid Communications Volume: 94 Issue: 14
  • DOI: 10.1103/physrevb.94.140401
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Transmission of spin waves in ordered FeRh epitaxial thin films (2016)
  • Author(s): T. Usami, I. Suzuki, M. Itoh, and T. Taniyama
  • Journal Title: Applied Physics Letters Volume: 108 Issue: 23
  • DOI: 10.1063/1.4953464
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] FeRh規則合金における磁気相転移とマグネティクス応用の現状と展開 (2016)
  • Author(s): 谷山 智康
  • Journal Title: 日本磁気学会第209回研究会「反強磁性が拓くマグネティクスの新展開」資料 Volume: 209 Pages: 13-19
• [Journal Article] Exchange coupling in metallic multilayers with a top FeRh layer (2016)
  • Author(s): S. Yamada, K. Tanikawa, J. Hirayama, T. Kanashima, T. Taniyama, K. Hamaya
  • Journal Title: AIP Advances Volume: 6 Issue: 5
  • DOI: 10.1063/1.4943606
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Barkhausen-like antiferromagnetic to ferromagnetic phase transition driven by spin polarized current (2015)
  • Author(s): I. Suzuki, T. Naito, M. Itoh, T. Taniyama
  • Journal Title: Appl. Phys. Lett. Volume: 107 Issue: 8 Pages: 0824081-5
  • DOI: 10.1063/1.4929695
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Sequential write-read operations in FeRh antiferromagnetic memory (2015)
  • Author(s): T. Moriyama, N. Matsuzaki, K.-J. Kim, I. Suzuki, T. Taniyama, and T. Ono
  • Journal Title: Applied Physics Letters Volume: 107 Issue: 12 Pages: 122403-122403
  • DOI: 10.1063/1.4931567
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Low-temperature B2 ordering and magnetic properties of Fe100-xRhx films on bcc alloys (2015)
  • Author(s): S. Yamada, K. Tanikawa, J. Hirayama, T. Kanashima, T. Taniyama, and K. Hamaya
  • Journal Title: Physical Review B Volume: 92 Issue: 9
  • DOI: 10.1103/physrevb.92.094416
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Controllable exchange bias in Fe/metamagnetic FeRh bilayers (2014)
  • Author(s): I. Suzuki, Y. Hamasaki, M. Itoh, and T. Taniyama
  • Journal Title: Applied Physics Letters Volume: 105 Issue: 17
  • DOI: 10.1063/1.4900619
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Long Range Spin Wave Propagation in Ordered Ferromagnetic FeRh (2017)
  • Author(s): T. Usami, M. Itoh, and T. Taniyama
  • Organizer: SpinTECH IX (International school and conference 2017)
  • Place of Presentation: Fukuoka, Japan
  • Int'l Joint Research
• [Presentation] Control of Magnetism in Ordered FeRh (2017)
  • Author(s): T. Taniyama, I. Suzuki, T. Usami, and M. Itoh
  • Organizer: Spintronics and Core-to-Core Workshop 2017
  • Place of Presentation: Osaka, Japan
  • Int'l Joint Research
• [Presentation] 強磁性Py/反強磁性FeRh/強磁性Py接合におけるスピン波の伝播特性 (2017)
  • Author(s): 宇佐見 喬政, 伊藤 満, 谷山 智康
  • Organizer: 日本物理学会第72回年次大会
  • Place of Presentation: 大阪大学・豊中市
• [Presentation] Manipulation of Antiferromagnetic-Ferromagnetic Phase Transition of Ordered FeRh and Beyond (2017)
  • Author(s): Tomoyasu Taniyama
  • Organizer: 3rd Conference on Magnetism and Its Applications (MIA2017)
  • Place of Presentation: Bangkok, Thailand
  • Int'l Joint Research / Invited
• [Presentation] FeRh細線におけるスピン波励起とその組成依存性 (2016)
  • Author(s): 宇佐見 喬政, 鈴木 一平, 伊藤 満, 谷山 智康
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 仙台市・東北学院大
  • Year and Date: 2016-03-19
• [Presentation] 反強磁性体FeRh細線における電流による磁区制御 (2016)
  • Author(s): 松崎 乃里子, 森山 貴広, Kab-Jin Kim, 鈴木 一平, 谷山 智康, 小野 輝男
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 仙台市・東北学院大
  • Year and Date: 2016-03-19
• [Presentation] Atomic Ordering Dependence of Spin Wave Dispersion in Epitaxial Ferromagnetic FeRh Wires (2016)
  • Author(s): T. Usami, I. Suzuki, M. Itoh, T. Taniyama
  • Organizer: 2nd Conference on Magnetism and Its Applications (MIA 2016)
  • Place of Presentation: Beijing, China
  • Year and Date: 2016-03-01
  • Int'l Joint Research
• [Presentation] Exchange Coupling in Epitaxially Grown Multilayers with B2-FeRh (2016)
  • Author(s): S. Yamada, K. Tanikawa, J. Hirayama, T. Kanashima, T. Taniyama, K. Hamaya
  • Organizer: MMM/Internmag 2016 Joint Conference
  • Place of Presentation: San Diego, USA
  • Year and Date: 2016-01-15
  • Int'l Joint Research
• [Presentation] Write-Read Operations in Antiferromagnetic Memory Resistor (2016)
  • Author(s): N. Matsuzaki, T. Moriyama, K.-J. Kim, I. Suzuki, T. Taniyama, T. Ono
  • Organizer: MMM/Internmag 2016 Joint Conference
  • Place of Presentation: San Diego, USA
  • Year and Date: 2016-01-14
  • Int'l Joint Research
• [Presentation] Excitation and Detection of Spin Waves in Ordered FeRh Thin Films (2016)
  • Author(s): T. Usami, I. Suzuki, M. Itoh, T. Taniyama
  • Organizer: MMM/Internmag 2016 Joint Conference
  • Place of Presentation: San Diego, USA
  • Year and Date: 2016-01-12
  • Int'l Joint Research
• [Presentation] 純スピン流注入による近藤効果の制御 (2016)
  • Author(s): 沖 宗一郎, 黒川 孝幸, 山田 晋也, 金島 岳, 谷山 智康, 浜屋 宏平
  • Organizer: 第10回物性科学領域横断研究会（領域合同研究会）
  • Place of Presentation: 神戸大学・神戸市
• [Presentation] FeRh規則合金における磁気相転移とマグネティクス応用の現状と展開 (2016)
  • Author(s): 谷山 智康
  • Organizer: 日本磁気学会第209回研究会
  • Place of Presentation: 東京・中央大
  • Invited
• [Presentation] Long-range Propagation of Magnetostatic Surface Spin Waves in Ordered FeRh Epitaxial Thin Films (2016)
  • Author(s): Takamasa Usami, Ippei Suzuki, Mitsuru Itoh, and Tomoyasu Taniyama
  • Organizer: 61st Annual Conference on Magnetism and Magnetic Materials (MMM2016)
  • Place of Presentation: New Orleans, USA
  • Int'l Joint Research
• [Presentation] Transmission of Spin Waves in Ordered FeRh Films (2016)
  • Author(s): Takamasa Usami, Takuya Miyauchi, Kazuki Ichikawa, Mitsuru Itoh, and Tomoyasu Taniyama
  • Organizer: Visual-JW2016 (iLIM)
  • Place of Presentation: Osaka, Japan
  • Int'l Joint Research
• [Presentation] Spin Wave Transmission in FeRh Thin Films (2016)
  • Author(s): T. Taniyama, T. Usami, and M. Itoh
  • Organizer: International Workshop on Nano-Spin Conversion Science & Quantum Spin Dynamics (NSCS-QSD)
  • Place of Presentation: Tokyo, Japan
  • Int'l Joint Research
• [Presentation] B2 Ordering Dependence of Spin-wave Frequency in Ferromagnetic FeRh Thin Films (2016)
  • Author(s): T. Usami, I. Suzuki, M. Itoh, and T. Taniyama
  • Organizer: 9th International Conference on Physics and Applications of Spin-Related Phenomena in Solids (PASPS9)
  • Place of Presentation: Kobe, Japan
  • Int'l Joint Research
• [Presentation] Pure Spin Current Transport in a Kondo Alloy Cu(Fe) (2016)
  • Author(s): T. Kurosawa, S. Oki, S. Yamada, T. Kanashima, T. Taniyama, and K. Hamaya
  • Organizer: 9th International Conference on Physics and Applications of Spin-Related Phenomena in Solids (PASPS9)
  • Place of Presentation: Kobe, Japan
  • Int'l Joint Research
• [Presentation] Tunable Magnetic Phases in Fe-Rh-based Thin Films (2016)
  • Author(s): T. Taniyama
  • Organizer: EMN Summer Meeting
  • Place of Presentation: Cancun, Mexico
  • Int'l Joint Research / Invited
• [Presentation] 反強磁性体FeRh細線における磁区制御と異方性磁気抵抗効果 (2015)
  • Author(s): 松崎 乃里子, 森山 貴広, Kab-Jin Kim, 鈴木 一平, 谷山 智康, 小野 輝男
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 吹田市・関西大学
  • Year and Date: 2015-09-18
• [Presentation] Current Induced Antiferro-ferromagnetic Transition and Anisotropic Magnetoresistance in FeRh Nanowires (2015)
  • Author(s): H. Matsuzaki, T. Moriyama, M. Nagata, K.-J. Kim, I. Suzuki, T. Taniyama, T. Ono
  • Organizer: 22nd International Colloqium on Magnetic Films and Surfaces (ICMFS)
  • Place of Presentation: Cracow, Poland
  • Year and Date: 2015-07-17
  • Int'l Joint Research
• [Presentation] Artficial Control of Magnetic Phase Transition of B2 Ordered FeRh-based Thin Films (2015)
  • Author(s): I. Suzuki, R. Iijima, T. Usami, J. Okada, M. Itoh, T. Taniyama
  • Organizer: New Perspectives in Spintronic and Mesoscopic Physics (NPSMP2015)
  • Place of Presentation: Kashiwa, Japan
  • Year and Date: 2015-06-10
  • Int'l Joint Research
• [Presentation] Temperature Controllable Exchange Bias in Fe/FeRh Heterostructures (2014)
  • Author(s): I. Suzuki, M. Itoh, and T. Taniyama
  • Organizer: 59th Annual Magnetism & Magnetic Materials Conference (MMM2014)
  • Place of Presentation: Hilton Hawaiian Village
  • Year and Date: 2014-11-07
• [Remarks]
  • URL: http://www.msl.titech.ac.jp/~itohlab/
• [Remarks] http://www.msl.titech.ac.jp/~itohlab/
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  • URL: http://www.msl.titech.ac.jp/~itohlab/