Theory of spin current control by use of magnetic and mechanical motions

2015 Fiscal Year Final Research Report

• Project/Area Number: 24740247
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics II
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: IEDA Jun'ichi 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 先端基礎研究センター, 研究副主幹 (20463797)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: スピン起電力 / スピン流 / 磁壁 / スピン軌道相互作用 / 垂直磁気異方性 / スピン回転相互作用 / バーネット効果 / 液体金属

Outline of Final Research Achievements

Generation methods of spin current - a flow of magnetism - originating from magnetic and mechanical motion in ferromagnetic nanostructures have been investigated. Theoretical study shows that high magnetic anisotropy materials can significantly stabilize a voltage signal arising from magnetic domain wall motion in nano-magnets making its magnitude 100 times larger than those observed previously. Some device applications based on this effect are also proposed. In addition, fluid motion of a liquid metal is shown to generate a spin current, which has been confirmed experimentally in collaboration work with an experimental group.

Free Research Field

物性理論