Current-induced magnetic vortex motion by spin-transfer torque

被引：109

作者：

Shibata, J

Nakatani, Y

Tatara, G

Kohno, H

Otani, Y

机构：

[1] RIKEN, FRS, Wako, Saitama 3510198, Japan

[2] JST, CREST, Kawaguchi, Saitama, Japan

[3] Univ Electrocommun, Chofu, Tokyo 1828585, Japan

[4] Tokyo Metropolitan Univ, Dept Phys, Hachioji, Tokyo 1920397, Japan

[5] JST, PRESTO, Kawaguchi, Saitama, Japan

[6] Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan

[7] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[8] RIKEN, FRS, Wako, Saitama 3510198, Japan

[9] JST, CREST, Kawaguchi, Saitama, Japan

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.73.020403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the dynamics of a magnetic vortex driven by spin-transfer torque due to spin current in the adiabatic case. The vortex core represented by collective coordinate experiences a transverse force proportional to the product of spin current and gyrovector, which can be interpreted as the geometric force determined by topological charges. We show that this force is just a reaction force of Lorentz-type force from the spin current of conduction electrons. Based on our analyses, we propose analytically and numerically a possible experiment to check the vortex displacement by spin current in the case of single magnetic nanodot.

引用

页数：4

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