Control of spin-wave heat conveyer effect and observation of cooling effect

• Project/Area Number: 26286041
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Applied materials
• Research Institution: Japan Advanced Institute of Science and Technology (2015-2016); The Institute of Physical and Chemical Research (2014)
• Principal Investigator: AN TOSHU 北陸先端科学技術大学院大学, 先端科学技術研究科, 准教授 (70500031)
• Co-Investigator(Renkei-kenkyūsha): EIJI SAITOH 東北大学, 金属材料研究所, 教授 (80338251) ; KIM YOUSOO 独立行政法人理化学研究所, 主任研究員 (50373296)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000); Fiscal Year 2016: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2015: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2014: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
• Keywords: スピンエレクトロニクス / 熱工学 / 排熱利用 / エネルギー効率 / 磁性 / エネルギー効率化 / スピン波 / 磁気共鳴 / 赤外線カメラ / スピントロニクス / スピンホール効果

Outline of Final Research Achievements

First, spin wave heat conveyer effect was investigated on an yttrium iron garnet (YIG) sample as a function of excited spin-wave frequencies. At lower frequency the heat conveyer effect was observed localized at the sample end. At higher frequency, the effect was observed shift to inner position from the sample end. Second, spin transfer torque was applied to spin waves by spin Hall effect through the Pt and/or W film evaporated on the YIG sample by flowing a current. The modulated spin-wave heat conveyer effect was observed at the sample end by using infrared camera. This observed effect is possible to be originated from spin Hall effect.

Research Products

• [Presentation] スピン波の熱イメージングと応用 (2017)
  • Author(s): 安 東秀、内田健一、井口 亮、 大門俊介、 齊藤英治
  • Organizer: 日本磁気学会第63回スピンエレクトロニクス専門研究会
  • Place of Presentation: 日本大学理工学部駿河台キャンパス（東京都、千代田区）
  • Year and Date: 2017-03-31
  • Invited
• [Presentation] スピン波熱移送効果の スピンホール効果による変調 (2016)
  • Author(s): 安 東秀、内田健一、井口 亮、 大門俊介、 齊藤英治
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 金沢大学（石川県、金沢市）
  • Year and Date: 2016-09-14
• [Presentation] Spin-Wave Spintronics (2016)
  • Author(s): T. An
  • Organizer: The 1st International Symposium of Applied Physics & Single-nano Excellent-core
  • Place of Presentation: Japan Advanced institute of Science and Technology （石川県能美市）
  • Year and Date: 2016-02-03
  • Int'l Joint Research