Orientational ordering of adsorbed monolayers

Abstract

We set up a model for the adsorption energy for a closed-packed hexagonal monolayer deposited on a substrate surface of the same structure, but different lattice constant, as a function of the epitaxy angle between the principal axis. The surface substrate potential is expressed in the form of a periodic potential with symmetry and periodicity of the substrate surface. The particular case of lead underpotentially deposited on Ag(111) is examined. © 1992 John Wiley & Sons, Inc.