Self-consistent rate-equation approach to transitions in critical island size in metal „100... and metal „111... homoepitaxy
نویسندگان
چکیده
A self-consistent rate-equation approach to the study of transitions in the critical island size i in submonolayer growth from i51 to i52 and from i51 to i53, corresponding to homoepitaxial growth on metal ~111! and ~100! surfaces, is presented. In contrast to previous standard rate-equation results, the average island density and monomer density are well predicted along with the transition temperature from i51 to a higher critical island size. It is shown that the method’s implicit short-range correlations between attachment/ detachment rates, together with a careful estimate of the escape rates for small clusters, are important factors for a good agreement with the kinetic Monte Carlo simulation results. @S0163-1829~98!00227-6#
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