Current-driven vortex domain wall dynamics by micromagnetic simulations

被引：83

作者：

He, J ^{[1
]}

Li, Z ^{[1
]}

Zhang, S ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 18期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.73.184408

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Current-driven vortex wall dynamics is studied by means of a two-dimensional analytical model and micromagnetic simulation. By constructing a trial function for the vortex wall in the magnetic wire, we analytically solve for domain wall velocity and deformation in the presence of the current-induced spin torque. A critical current for the domain wall transformation from the vortex wall to the transverse wall is calculated. A comparison between the field- and current-driven wall dynamics is carried out. Micromagnetic simulations are performed to verify our analytical results.

引用

页数：7

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