KINETIC SURFACE ROUGHENING AND MOLECULAR BEAM EPITAXY

We review recent developments in our understanding of Molecular Beam Epitaxy as a kinetically rough growth phenomenon. It is argued that while the most general growth conditions lead to generic growth universality, actual growth conditions allow a complex interplay of several different dynamic universality classes producing rich crossover behavior determined by growth temperature, incident flux rate, and local solid state physics and chemistry of the growing material. Possible coarse-grained continuum growth equations which may be applicable to Molecular Beam Epitaxy are discussed.