Creation of spin-phononics

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H02012
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Applied materials
• Research Institution: National Institute for Materials Science (2016-2017); Tohoku University (2015)
• Principal Investigator: UCHIDA Ken-ichi 国立研究開発法人物質・材料研究機構, 磁性・スピントロニクス材料研究拠点, グループリーダー (50633541)
• Co-Investigator(Kenkyū-buntansha): 塩見 淳一郎 東京大学, 大学院工学系研究科(工学部), 教授 (40451786) ; 井口 亮 国立研究開発法人物質・材料研究機構, 磁性・スピントロニクス材料研究拠点, 研究員 (40707717)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: スピントロニクス / スピン流 / スピンゼーベック効果 / スピンペルチェ効果 / マグノン / フォノン / 異常エッチングスハウゼン効果 / ロックインサーモグラフィ

Outline of Final Research Achievements

The goal of this research project is to develop physical principles and material technologies enabling efficient and controllable thermo-spin conversion by combining spintronics with phononics. To accomplish this objective, we mainly investigated the spin Seebeck and Peltier effects, which refer to the generation of a spin current as a result of a heat current and vice versa, respectively. By systematically measuring the spin Seebeck effect, we demonstrated the independent control of magnon and phonon propagations by nanostructuring and the thermal spin-current generation by magnetoelastic coupling. Furthermore, we developed imaging techniques for thermo-spin effects by means of the lock-in thermography, and observed spatially-localized temperature modulation induced by spin currents. These achievements will provide a platform for next-generation spintronics combined with phononics.

Free Research Field

スピントロニクス