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arXiv · 1209.2301

Creep motion of a domain wall in the two-dimensional random-field Ising model with a driving field

R. H. Dong·B. Zheng·N. J. Zhou
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Abstract

With Monte Carlo simulations, we study the creep motion of a domain wall in the two-dimensional random-field Ising model with a driving field. We observe the nonlinear fieldvelocity relation, and determine the creep exponent μ. To further investigate the universality class of the creep motion, we also measure the roughness exponent ζ and energy barrier exponent ψ from the zero-field relaxation process. We find that all the exponents depend on the strength of disorder.

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R. H. Dong, B. Zheng, N. J. Zhou. 2012-09-11. Creep motion of a domain wall in the two-dimensional random-field Ising model with a driving field. https://doi.org/10.1209/0295-5075%2F98%2F36002

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