Evaporation and Step Edge Diffusion in MBE
arXiv:cond-mat/9810007 · doi:10.1016/S0022-0248(98)01293-7
Abstract
Using kinetic Monte-Carlo simulations of a Solid-on-Solid model we investigate the influence of step edge diffusion (SED) and evaporation on Molecular Beam Epitaxy (MBE). Based on these investigations we propose two strategies to optimize MBE-growth. The strategies are applicable in different growth regimes: during layer-by-layer growth one can reduce the desorption rate using a pulsed flux. In three-dimensional (3D) growth the SED can help to grow large, smooth structures. For this purpose the flux has to be reduced with time according to a power law.
5 pages, 2 figures, latex2e (packages: elsevier,psfig,latexsym)