Magnetic domain walls displacement: Automotion versus spin-transfer torque

被引：51

作者：

Chauleau, Jean-Yves ^{[1
]}

Weil, Raphael ^{[1
]}

Thiaville, Andre ^{[1
]}

Miltat, Jacques ^{[1
]}

机构：

[1] Univ Paris Sud, Phys Solides Lab, CNRS, UMR 8502, F-91405 Orsay, France

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 21期

关键词：

POLARIZED CURRENT; MOMENTUM; DYNAMICS; FORCE;

D O I：

10.1103/PhysRevB.82.214414

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

From the magnetization dynamics equation, a domain wall that changes structure is predicted to undergo a displacement by itself, a phenomenon called automotion. We experimentally demonstrate this effect in soft nanostrips, by transforming under spin-transfer torque a metastable asymmetric transverse wall into a vortex wall. Displacements more than three times larger than under spin-transfer torque only are measured for 1 ns pulses. The results are explained by analytical and numerical micromagnetics. Their relevance to domain-wall motion under spin-transfer torque is emphasized.

引用

页数：7

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