Influence of temperature on the depinning transition of driven interfaces

We study the dynamics of a driven interface in a two-dimensional random-fie ld Ising model close to the depinning transition at small but finite temper atures T using Glauber dynamics. A square lattice is considered with an int erface initially in the (11)-direction. The drift velocity v is analyzed us ing finite-size scaling at T = 0 and additionally finite-temperature scalin g close to the depinning transition. Ln both cases a perfect data collapse is obtained from which we deduce beta approximate to 1/3 for the exponent w hich determines the dependence of v on the driving field, nu approximate to 1 for the exponent of the correlation length and delta approximate to 5 fo r the exponent which determines the dependence of v on T.