Krug, Jochim; Plischke, Michael; Siegert, Martin:
Surface-diffusion currents and the universality classes of growth
1993
In: Physical Review Letters, Jg. 70 (1993), Heft 21, S. 949
Artikel/Aufsatz in Zeitschrift1993Physik
Titel:
Surface-diffusion currents and the universality classes of growth
Autor(in):
Krug, Jochim; Plischke, Michael; Siegert, Martin
Erscheinungsjahr
1993

Abstract:

We show, through simulations of a variety of one- and two-dimensional solid-on-solid models, that nonequilibrium surface diffusion processes in the presence of a deposition flux are generically characterized by a nonvanishing inclination-dependent mass current along the surface. The current stabilizes the surface, leading to Edwards-Wilkinson scaling for the surface fluctuations, if it is a decreasing function of inclination, but induces a growth instability otherwise. Both types of behavior generally occur for the same system at different surface orientations.