Nonequilibrium behavior of the random field Ising model.
01 January 1986
The dynamics of the random field Ising model quenched to low temperatures are studied with use of a continuum interface model. We find domain wall pinning phenomena which account for many of the observations on diluted antiferromagnets in uniform fields. In particular, we show that at low temperatures domains can grow if the field is reduced, but will not shrink if the field is increased. Our theory also explains the neutron scattering profiles measured for both two-and-three-dimensional systems.