Surface phase diagram for ZnSe MBE growth

Abstract

During growth by molecular beam epitaxy the ZnSe surface can exhibit two surface reconstructions, a selenium rich 2/spl times/1 surface or a zinc rich c(2/spl times/2) surface. The atomic flux ratios and substrate temperatures for which these reconstructions are observed has been determined. A model involving a precursor state will be described which permits the fractional surface coverage to be compared with the surface phase diagram.