Ordering process and Bloch wall dynamics in a two-dimensional anisotropic spin system

被引：7
|
作者：
Tutu, H
机构：
[1] Department of Physics, Kyushu University 33, Fukuoka
来源：
PHYSICAL REVIEW E | 1997年 / 56卷 / 05期
关键词：
D O I：
10.1103/PhysRevE.56.5036
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The ordering process of a nonconserved anisotropic XY-spin system in two-dimensional space is investigated. The dynamics is described by the motion of the domain wall, the so-called Bloch wall, which has chirality, in addition to the curvature of the interface. We obtain a convenient description for the dynamics of the domain wall, which has a generalized form of the Allen-Cahn-type equation of motion for the phase boundary, taking into account the effect of the width of the wall. We also discuss the short-scale behavior of the correlation function for this system when the system relaxes from an O(2) symmetry state to a state having O(1) symmetry.
引用
收藏
页码：5036 / 5043
页数：8
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