33rd CEMS Colloquium

講演者

齊藤英治 (東北大学教授)

日程

2015年11月25日(水) 17:30～18:30

開催場所

理化学研究所　大河内記念ホール

講演タイトル

Spin current generators

講演概要

I will give an introduction to the concept and various fascinating phenomena of spin-current science. Generation and utilization of spin current, a flow of spin angular momentum of electrons in condensed matter, are the key challenge of today’s nano magnetism and spintronics. The discovery of the inverse spin Hall effect has allowed researchers to detect and utilize spin current directly, and, since then, many spin-current driven effects have been discovered, including spin Seebeck effects, light-spin conversion, sound-spin conversion, and motion-spin conversion. Spin Seebeck effects refer to spin-current generation from a temperature gradient, where spin’s non reciprocity allows it to rectify thermal fluctuation into unidirectional spin current; spins, working as a natural rectifier in magnets, may thus provide a versatile mechanism of energy conversion in condensed matter. Spin micro mechanics, one of more recent topics, will also be covered.