Dynamical generation of spin currents

被引：27

作者：

Ando, Kazuya ^{[1
,2
]}

机构：

[1] Keio Univ, Dept Appl Phys & Phys Informat, Yokohama, Kanagawa 2238522, Japan

[2] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan

来源：

SEMICONDUCTOR SCIENCE AND TECHNOLOGY | 2014年 / 29卷 / 04期

关键词：

spintronics; spin current; magnetization dynamics; ROOM-TEMPERATURE; SEMICONDUCTOR SPINTRONICS; ELECTRONIC MEASUREMENT; INJECTION; SILICON; TRANSPORT; DRIVEN; MAGNETIZATION; POLARIZATION; ORIENTATION;

D O I：

10.1088/0268-1242/29/4/043002

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A spin current, a flow of electron spins in a solid, interacts with magnetization by exchanging the spin angular momentum. This interaction is responsible for spintronic functionalities; spin injection into a ferromagnet transfers the spin angular momentum, enabling switching the direction of the magnetization or driving magnetization precession. The inverse of this process, i.e., the angular momentum transfer from magnetization to carrier spins, is spin pumping; a spin current is emitted from a ferromagnet by the angular momentum transfer from precessing magnetization to carrier spins through dynamical spin-exchange coupling at a ferromagnetic/nonmagnetic interface. This dynamical spin injection offers a versatile route for generating spin currents in a wide range of materials, providing a pathway to explore spin physics in condensed matter.

引用

页数：13

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