PHASE-SEPARATION IN THE PRESENCE OF A SURFACE

We have studied the phase separation of a system with a conserved orde r parameter in the presence of a flat surface via Monte Carlo simulati ons. For various quench parameters, we observed the domain growth in a surface layer. The kinetics of this ordering was studied, both in the presence and absence of bulk phase separation. In the absence of bulk phase separation, the surface domains were found to follow model A gr owth kinetics. In the presence of bulk phase separation. a crossover i n the surface kinetics between model A and model B dynamics was observ ed.