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arXiv · 1209.0513

Hamiltonian equation of motion and depinning phase transition in two-dimensional magnets

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

Based on the Hamiltonian equation of motion of the $ϕ^4$ theory with quenched disorder, we investigate the depinning phase transition of the domain-wall motion in two-dimensional magnets. With the short-time dynamic approach, we numerically determine the transition field, and the static and dynamic critical exponents. The results show that the fundamental Hamiltonian equation of motion belongs to a universality class very different from those effective equations of motion.

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R. H. Dong, B. Zheng, N. J. Zhou. 2012-09-04. Hamiltonian equation of motion and depinning phase transition in two-dimensional magnets. https://doi.org/10.1209/0295-5075%2F99%2F56001

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