Transient dynamics of pinning of domain wall

被引:1
作者
Leaf, GK
Obukhov, S
Scheidl, S
Vinokur, VM
机构
[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60441 USA
[2] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA
[3] Univ Florida, Gainesville, FL 32611 USA
[4] Univ Cologne, Inst Theoret Phys, D-50937 Cologne, Germany
关键词
elastic manifold; domain wall; pinning; transient dynamics; glassy motion;
D O I
10.1016/S0304-8853(01)00980-5
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We study the evolution of an elastic string. serving as model for a domain,wall. into the pinned state at driving forces slightly below the depinning threshold force F-C. We quantify the temporal evolution of the string by an at activity function. A(t) representing the fraction of active nodes at time t and find three distinct dynamic regimes. There is an initial stage of fast decal of the activiy in the second. intermediate. regime. an exponential decay of activity is observed: and. eventually, the fast collapse of the string towards its final pinned state results in decay in the activity with A(t) similar to (t(p) - t)(phi). here t(p) is the pinning time in the finite system involved. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:118 / 123
页数:6
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