摘要

A semiempirical molecular orbital study for small aggregates of Ni on Ni(111) and Pt on Pt(111) has been performed within the cluster approximation. Different adsorption sites for monatomic adsorption, and different geometrical configurations for aggregates up to four atoms, have been considered. Results suggest a very competitive morphological structure in the very early stages of homoepitaxial growth of these systems. The influence of factors as cluster size or cluster border have been analysed.

  • 出版日期1994-11-20