Current-spin coupling for ferromagnetic domain walls in fine wires

被引：219

作者：

Barnes, SE ^{[1
]}

Maekawa, S

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Univ Miami, Dept Phys, Coral Gables, FL 33124 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.95.107204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The coupling between a current and a domain wall is examined. In the presence of a finite current and in the absence of a potential which breaks the translational symmetry, there is a perfect transfer of angular momentum from the conduction electrons to the wall. As a result, the ground state is in uniform motion and this remains the case even when relaxation is included. This is described by, appropriately modified, Landau-Lifshitz-Gilbert equations. The results for a simple pinning model are compared with experiment.

引用

页数：4

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