Adsorption of Incommensurate Monolayers on an Hexagonal Substrate: Lead Underpotentially Deposited on Silver (111).

摘要

We discuss the incommensurate adsorption of an ad layer on a crystalline substrate. We show that in the case of Pb adsorbed on Ag (111) the size considerations are not enough to determine the angle of epitaxy: A special form of the adsorbing potential is required. The necessary conditions for this potential is discussed. An explicit form for the pb/Ag(111) case is given. Keywords: Structured electrode; Interfaces; Underpotential deposition. (jes)