Domain Growth in Random Magnets
arXiv:cond-mat/0404207 · doi:10.1209/epl/i2004-10276-4
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