Comment on the structures of the liquidndash;vapor interfaces of Na and Nandash;Cs alloys

摘要

We report the results of Monte Carlo simulations of the liquidndash;vapor interfaces of Na and of two Nandash;Cs alloys. The calculations are intended to test, on larger samples and using different geometries, the previously reported stratification of the liquidndash; vapor interface of a metal. Our results show that stratification of the liquidndash;vapor transition zone of a metal is independent of sample size and geometry. We also demonstrate how the segregation of one component of an alloy at the surface influences the structure of the liquidndash;vapor interface, and how the pair correlation function in the liquidndash;vapor interface of a free cluster depends on the radius of curvature of the cluster.