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.
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页数：7
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