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

Abstract

With Monte Carlo simulations, the nonsteady dynamics 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.

17 pages, 5 figures

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Cited by in corpus (4)

• Creep motion of elastic interfaces driven in a disordered landscape
• Large-scale Monte Carlo simulations for the depinning transition in Ising-type lattice models
• Nonsteady dynamics at the dynamic depinning transition in the two-dimensional Gaussian random-field Ising model
• Spin-reorientation critical dynamics in the two-dimensional XY model with a domain wall