Mechanisms of spin-polarized current-driven magnetization switching

被引：521

作者：

Zhang, S ^{[1
]}

Levy, PM

Fert, A

机构：

[1] Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA

[2] NYU, Dept Phys, New York, NY 10003 USA

[3] Univ Paris 11, THALES, CNRS, Unite Mixte Phys, F-91404 Orsay, France

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 23期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.88.236601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The mechanisms of the magnetization switching of magnetic multilayers driven by a current are studied by including exchange interaction between local moments and spin accumulation of conduction electrons. It is found that this exchange interaction leads to two additional terms in the Landau-Lifshitz-Gilbert equation: an effective field and a spin torque. Both terms are proportional to the transverse spin accumulation and have comparable magnitudes.

引用

页码：2366011 / 2366014

页数：4