Nonsteady dynamic properties of a domain wall for the creep state under an alternating driving field

被引：5

作者：

Zhou, N. J. ^{[1
]}

Zheng, B. ^{[2
]}

机构：

[1] Hangzhou Normal Univ, Dept Phys, Hangzhou 310036, Zhejiang, Peoples R China

[2] Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China

来源：

PHYSICAL REVIEW E | 2014年 / 90卷 / 01期

基金：

中国国家自然科学基金;

关键词：

ROUGHNESS EXPONENT; DISORDERED MEDIA; ISING-MODEL; INTERFACE; MOTION; UNIVERSALITY; SYSTEMS;

D O I：

10.1103/PhysRevE.90.012104

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：

With Monte Carlo simulations, the nonsteady dynamic properties of a domain wall have been systematically investigated for the thermally activated creep state under an alternating driving field. Taking the driven random-field Ising model in two dimensions as an example, two distinct growth stages of the domain interface are identified with both the correlation length and roughness function. One stage belongs to the universality class of the random depositions, and the other to that of the quenched Edwards-Wilkinson equation. In the latter case, due to the dynamic effect of overhangs, the domain interface may exhibit an intrinsic anomalous scaling behavior, different from that of the quenched Edwards-Wilkinson equation.

引用

页数：8

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