Ordering dynamics in Disordered systems

Abstract

We review analytical and numerical studies of phase ordering dynamics or domain growth in systems with quenched disorder. These studies are usually based on kinetic versions of the random-exchange Ising model (REIM) or random-field Ising model (RFIM). We also present detailed numerical results which clarify the nature of domain growth in random magnets. These results demonstrate that domain walls are trapped by disorder barriers with a logarithmic dependence on the domain size.