Domain Growth in Random Magnets

Abstract

We study the kinetics of domain growth in ferromagnets with random exchange interactions. We present detailed Monte Carlo results for the nonconserved random-bond Ising model, which are consistent with power-law growth with a variable exponent. These results are interpreted in the context of disorder barriers with a logarithmic dependence on the domain size. Further, we clarify the implications of logarithmic barriers for both nonconserved and conserved domain growth.

7 pages, 4 figures

References in corpus (5)

• Theory of Phase Ordering Kinetics
• Off-Equilibrium Dynamics in Finite-Dimensional Spin Glass Models
• Nonequilibrium Dynamics and Aging in the Three--Dimensional Ising Spin Glass Model
• Nonequilibrium Dynamics and Aging in the Three--Dimensional Ising Spin Glass Model
• Scaling in Late Stage Spinodal Decomposition with Quenched Disorder

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• Dynamical response function of the disordered kinetic Ising model
• Amplification of Fluctuations in Unstable Systems with Disorder
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