Influence of current on field-driven domain wall motion in permalloy nanowires from time resolved measurements of anisotropic magnetoresistance

被引：245

作者：

Hayashi, M.

Thomas, L.

Bazaliy, Ya. B.

Rettner, C.

Moriya, R.

Jiang, X.

Parkin, S. S. P.

机构：

[1] IBM Corp, Almaden Res Ctr, San Jose, CA 95120 USA

[2] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.96.197207

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The motion of magnetic domain walls in permalloy nanowires is investigated by real-time resistance measurements. The domain wall velocity is measured as a function of the magnetic field in the presence of a current flowing through the nanowire. We show that the current can significantly increase or decrease the domain wall velocity, depending on its direction. These results are understood within a one-dimensional model of the domain wall dynamics which includes the spin transfer torque.

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页数：4

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