Development of spin-current physics based on spin-lattice hybrid dynamics

• Project/Area Number: 25707029
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Condensed matter physics II
• Research Institution: Tohoku University
• Principal Investigator: KEN-ICHI Uchida 東北大学, 金属材料研究所, 准教授 (50633541)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥26,650,000 (Direct Cost: ¥20,500,000、Indirect Cost: ¥6,150,000); Fiscal Year 2014: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000); Fiscal Year 2013: ¥20,150,000 (Direct Cost: ¥15,500,000、Indirect Cost: ¥4,650,000)
• Keywords: スピン流 / 音波 / フォノン / 逆スピンホール効果 / スピンゼーベック効果 / 磁性体 / スピントロニクス / スピンエレクトロニクス / 磁性 / 物性実験 / 音波物性

Outline of Final Research Achievements

The acoustic spin pumping refers to the generation of spin currents by sound waves. In this research, we investigated the physics of the interaction between spin and lattice dynamics by measuring the acoustic spin pumping systematically. Here, we proposed and demonstrated novel methods for the pure detection and quantitative evaluation of the sound-wave-driven spin currents, which enable the separation of the acoustic spin pumping from the spin Seebeck effect. We also explored the temperature and magnetic field dependences of the spin Seebeck effect in the devices used for measuring the acoustic spin pumping in detail, and found important clues to a comprehensive understanding of the mechanisms for generating spin currents by heat currents and sound waves.

Research Products

• [Journal Article] Sign of inverse spin Hall voltages generated by ferromagnetic resonance and temperature gradients in yttrium iron garnet platinum bilayers (2015)
  • Author(s): M. Schreier, G. E. W. Bauer, V. Vasyuchka, J. Flipse, K. Uchida, J. Lotze, V. Lauer, A. Chumak, A. Serga, S. Daimon, T. Kikkawa, E. Saitoh, B. J. van Wees, B. Hillebrands, R. Gross, S. T. B. Goennenwein
  • Journal Title: Journal of Physics D: Applied Physics Volume: 48 Issue: 2 Pages: 025001-025001
  • DOI: 10.1088/0022-3727/48/2/025001
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Generation of spin currents by surface plasmon resonance (2015)
  • Author(s): K. Uchida, H. Adachi, D. Kikuchi, S. Ito, Z. Qiu, S. Maekawa, and E. Saitoh
  • Journal Title: Nature communications Volume: 6 Issue: 1 Pages: 5910-5910
  • DOI: 10.1038/ncomms6910
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Spin Hall magnetoresistance at high temperatures (2015)
  • Author(s): K. Uchida, Z. Qiu, T. Kikkawa, R. Iguchi, and E. Saitoh
  • Journal Title: Applied Physics Letters Volume: 106 Issue: 5 Pages: 052405-052405
  • DOI: 10.1063/1.4907546
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Enhancement of spin-Seebeck effect by inserting ultra-thin Fe70Cu30 interlayer (2015)
  • Author(s): D. Kikuchi, M. Ishida, K. Uchida, Z. Qiu, T. Murakami, and E. Saitoh
  • Journal Title: Applied Physics Letters Volume: 106 Issue: 8 Pages: 082401-082401
  • DOI: 10.1063/1.4913531
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Observation of longitudinal spin-Seebeck effect in cobalt-ferrite epitaxial thin films (2015)
  • Author(s): T. Niizeki, T. Kikkawa, K. Uchida, M. Oka, K. Z. Suzuki, H. Yanagihara, E. Kita, E. Saitoh
  • Journal Title: AIP Advances Volume: 5 Issue: 5 Pages: 053603-053603
  • DOI: 10.1063/1.4916978
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Evaluation of thermal gradients in longitudinal spin Seebeck effect measurements (2015)
  • Author(s): A. Sola, M. Kuepferling, V. Basso, M. Pasquale, T. Kikkawa, K. Uchida, E. Saitoh
  • Journal Title: Journal of Applied Physics Volume: 117 Issue: 17
  • DOI: 10.1063/1.4916762
  • Peer Reviewed
• [Journal Article] Influence of the interface condition on spin-Seebeck effects (2015)
  • Author(s): Z. Qiu, D. Hou, K. Uchida, E. Saitoh
  • Journal Title: Journal of Physics D: Applied Physics Volume: 48 Issue: 16 Pages: 164013-164013
  • DOI: 10.1088/0022-3727/48/16/164013
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Laser micro-processing as a tool for constructing insulator-based magnonic crystal (2015)
  • Author(s): S. Daimon, R. Iguchi, K. Uchida, E. Saitoh
  • Journal Title: Journal of Physics D: Applied Physics Volume: 48 Issue: 16 Pages: 164014-164014
  • DOI: 10.1088/0022-3727/48/16/164014
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Interface-dependent magneto transport properties for thin Pt films on ferrimagnetic Y3Fe5O12 (2014)
  • Author(s): Y. Shiomi, T. Ohtani, S. Iguchi, T. Sasaki, Z. Qiu, H. Nakayama, K. Uchida, and E. Saitoh
  • Journal Title: Applied Physics Letters Volume: 104 Issue: 24 Pages: 242406-242406
  • DOI: 10.1063/1.4883898
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Longitudinal spin Seebeck effect: from fundamentals to applications (2014)
  • Author(s): K. Uchida, M. Ishida, T. Kikkawa, A. Kirihara, T. Murakami, and E. Saitoh
  • Journal Title: Journal of physics: condensed matter Volume: 26 Issue: 34 Pages: 343202-343202
  • DOI: 10.1088/0953-8984/26/34/343202
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Anomalous Nernst effect of Fe3O4 single crystal (2014)
  • Author(s): R. Ramos, M.H. Aguirre, A. Anad´on, J. Blasco, I. Lucas, K. Uchida, P.A. Algarabel, L. Morell´on, E. Saitoh, and M.R. Ibarra
  • Journal Title: Physical Review B Volume: 90 Issue: 5 Pages: 054422-054422
  • DOI: 10.1103/physrevb.90.054422
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Spin current generation from sputtered Y3Fe5O12 films (2014)
  • Author(s): J. Lustikova, Y. Shiomi, Z. Qiu, T. Kikkawa, R. Iguchi, K. Uchida, and E. Saitoh
  • Journal Title: Journal of Applied Physics Volume: 111 Issue: 15 Pages: 153902-153902
  • DOI: 10.1063/1.4898161
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Pure detection of the acoustic spin pumping in Pt/YIG/PZT structures (2014)
  • Author(s): K. Uchida, Z. Qiu, T. Kikkawa, and E. Saitoh
  • Journal Title: Solid State Communications Volume: 198 Pages: 26-29
  • DOI: 10.1016/j.ssc.2013.10.012
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Quantitative Temperature Dependence of Longitudinal Spin Seebeck Effect in High Temperature Regions (2014)
  • Author(s): K. Uchida, T. Kikkawa, and E. Saitoh
  • Journal Title: Physical Review X Volume: 4 Issue: 4 Pages: 041023-041023
  • DOI: 10.1103/physrevx.4.041023
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Spin-relaxation modulation and spin-pumping control by transverse spin-wave spin current in Y_3Fe_5O_<12> (2013)
  • Author(s): Y.Kajiwara, K.Uchida, D.Kikuchi, T.An, Y.Fujikawa, and E.Saitoh
  • Journal Title: Applied Physics Letters Volume: Vol. 103 Issue: 5 Pages: 0524041-4
  • DOI: 10.1063/1.4817076
  • Peer Reviewed
• [Journal Article] Thermal imaging of standing waves (2013)
  • Author(s): T.An, K.Yamaguchi, K.Uchida, and E.Saitoh
  • Journal Title: Applied Physics Letters Volume: Vol. 103 Issue: 5 Pages: 0524101-3
  • DOI: 10.1063/1.4816737
  • Peer Reviewed
• [Journal Article] Spin mixing conductance at a well-controlled platinum/yttrium iron garnet interface (2013)
  • Author(s): Z. Qiu, K. Ando, K. Uchida, Y. Kajiwara, R. Takahashi, H. Nak ayama, T. An, Y. Fujikawa, and E. Saitoh
  • Journal Title: Applies Physics Letters Volume: 103 Issue: 9 Pages: 0924041-4
  • DOI: 10.1063/1.4819460
  • Peer Reviewed
• [Journal Article] Spin Current : Experimental and Theoretical Aspects (2013)
  • Author(s): S. Maekawa, H. Adachi, K. Uchida, J. Ieda and E. Saitoh
  • Journal Title: J. Phys. Soc. Jpn Volume: 82 Issue: 10 Pages: 102002-102002
  • DOI: 10.7566/jpsj.82.102002
  • NAID: 40019823772
  • Peer Reviewed
• [Journal Article] Experimental investigation of spin Hall effect in indium tin oxide thin film (2013)
  • Author(s): Z. Qiu, T. An, K. Uchida, D. Hou, Y. Shiomi, Y. Fujikawa and E. Saitoh
  • Journal Title: Applied Physics Letters Volume: 103 Issue: 18 Pages: 1824041-3
  • DOI: 10.1063/1.4827808
  • Peer Reviewed
• [Journal Article] Separation of longitudinal spin Seebeck effect from anomalous Nernst effect: Determination of the origin of transverse thermoelectric voltage in metal/insulator junctions (2013)
  • Author(s): T. Kikkawa, K. Uchida, S. Daimon, Y. Shiomi, H. Adachi, Z. Qiu, D. Hou, X.-F. Jin, S. Maekawa, and E. Saitoh
  • Journal Title: Physical Review B Volume: 88 Issue: 21 Pages: 214403-214403
  • DOI: 10.1103/physrevb.88.214403
  • Peer Reviewed
• [Presentation] Spin-current phenomena at high magnetic fields and high temperatures (2015)
  • Author(s): K. Uchida
  • Organizer: APS March Meeting 2015
  • Place of Presentation: San Antonio, USA
  • Year and Date: 2015-03-05
  • Invited
• [Presentation] スピン揺動絶縁体におけるスピンゼーベック効果と熱電変換 (2014)
  • Author(s): 内田健一
  • Organizer: 第5回 LC-IMR主催ワークショップ「低炭素社会に向けた科学技術イノベーションの最新動向」
  • Place of Presentation: 東北大学（宮城県仙台市青葉区）
  • Year and Date: 2014-12-12
  • Invited
• [Presentation] スピンゼーベック効果のデバイス応用への展望 (2014)
  • Author(s): 内田健一
  • Organizer: 第128回 金属材料研究所講演会
  • Place of Presentation: 東北大学（宮城県仙台市青葉区）
  • Year and Date: 2014-11-28
  • Invited
• [Presentation] 熱流・光によって駆動されるスピンダイナミクスとスピン流生成 (2014)
  • Author(s): 内田健一
  • Organizer: 日本物理学会 2014年秋季大会
  • Place of Presentation: 中部大学（愛知県春日井市）
  • Year and Date: 2014-09-09
  • Invited
• [Presentation] スピンゼーベック効果のデバイス応用への展望 ―熱電変換・センサー応用に向けて― (2014)
  • Author(s): 内田健一
  • Organizer: 日本磁気学会 第197回研究会「高感度磁気センサの研究と製品」
  • Place of Presentation: 中央大学（東京都千代田区）
  • Year and Date: 2014-07-11
  • Invited
• [Presentation] Experimental progress on spin Seebeck effect (2014)
  • Author(s): K. Uchida
  • Organizer: 2nd International Workshop on Spin Mechanics
  • Place of Presentation: 東北大学（宮城県仙台市青葉区）
  • Year and Date: 2014-06-24
  • Invited
• [Presentation] スピンゼーベック効果の発見と磁性絶縁体の熱電変換応用 (2014)
  • Author(s): 内田健一
  • Organizer: 仙台青葉工業クラブ第38回講演同好会
  • Place of Presentation: エルソーラ仙台（宮城県仙台市青葉区）
  • Year and Date: 2014-05-11
  • Invited
• [Presentation] スピンゼーベック効果とスピン熱物理の展開 (2014)
  • Author(s): 内田健一
  • Organizer: ALPS, MERIT共催ワークショップ「物理工学の新展開」
  • Place of Presentation: 東京大学（東京都文京区）
  • Year and Date: 2014-04-04
  • Invited
• [Presentation] Longitudinal spin Seebeck effect
  • Author(s): K. Uchida
  • Organizer: The 8th International Symposium on Metallic Multilayers
  • Place of Presentation: Kyoto, Japan
  • Invited
• [Presentation] Spin Seebeck effect
  • Author(s): K. Uchida
  • Organizer: The 32nd International Conference of Thermoelectrics
  • Place of Presentation: Kobe, Japan
  • Invited
• [Presentation] スピン流とスピンゼーベック効果
  • Author(s): 内田健一
  • Organizer: 第7回 CROSSroads ～機能する界面、反応する表面～
  • Place of Presentation: 東海
  • Invited
• [Presentation] Spin Seebeck effect: fundamentals and applications
  • Author(s): K. Uchida
  • Organizer: SPIE Optics + Photonics 2013
  • Place of Presentation: San Diego, USA
  • Invited
• [Presentation] Generation of spin currents from heat, sound, and light
  • Author(s): K. Uchida
  • Organizer: KITP conference "Concepts in Spintronics"
  • Place of Presentation: Santa Barbara, USA
  • Invited
• [Presentation] スピンゼーベック効果
  • Author(s): 内田健一
  • Organizer: 第5回 マイクロ・ナノ工学シンポジウム
  • Place of Presentation: 仙台
  • Invited
• [Presentation] スピンゼーベック効果の発見とスピン熱流物理の展開
  • Author(s): 内田健一
  • Organizer: 第7回 物性科学領域横断研究会
  • Place of Presentation: 東京
  • Invited
• [Presentation] Spin Seebeck effect and spin-current-driven thermoelectric generation
  • Author(s): K. Uchida
  • Organizer: 2013 MRS Fall Meeting
  • Place of Presentation: Boston, USA
  • Invited
• [Presentation] 絶縁体を用いた熱・音・光によるスピン流生成
  • Author(s): 内田健一
  • Organizer: 第3回 固体中のディラック電子研究会
  • Place of Presentation: 兵庫
  • Invited
• [Presentation] Spin-current generation from heat, sound and light
  • Author(s): K. Uchida
  • Organizer: 14th REIMEI Workshop on Spin Currents and Related Phenomena
  • Place of Presentation: Grenoble, France
  • Invited
• [Book] サーマルマネジメント ～余熱・排熱の制御と有効利用～ (2013)
  • Author(s): 内田健一、齊藤英治 他
  • Total Pages: 636
  • Publisher: エヌ・ティー・エス出版
• [Remarks] http://www-lab.imr.tohoku.ac.jp/~kuchida/