Dispersion of surface phonons in xenon overlayers physisorbed on the Ag(111) surface

Abstract
Computer simulation and lattice dynamics have been used to investigate phonons propagating in monolayers, bilayers, and trilayers of xenon physisorbed on a Ag(111) surface. Agreement with the experimentally determined dispersion of the surface phonons has been achieved by the use of a realistic interatomic potential for the Xe adatoms and a new surface-adatom potential.