Two-dimensional island dynamics: Role of step energy anisotropy

摘要: Abstract Studies of surface dynamics, including the kinetics two-dimensional (2D) island coarsening/decay, shape fluctuations, and evolution, enable determination rate-limiting mechanisms, corresponding mass transport parameters, step energies. Most models describing these phenomena assume isotropic (circular) or near-isotropic shapes and, hence, However, even simple elemental metal surfaces are anisotropic more complex compound such as low-index planes TiN, GaAs, GaN, ZnO, Al 2 O 3 , ZrO highly anisotropic. Here, we describe recent progress toward developing generalized theoretical experimental approaches, applicable for analyses 2D coarsening/decay kinetics, coalescence orientation-dependent energies stiffnesses, on both surfaces.