title: Substrate mediated long-range oscillatory interaction between adatoms: Cu /Cu(111).
abstract: A quantitative study of the long-range interaction between single copper adatoms on Cu(111) mediated by the electrons in the two-dimensional surface-state band is presented. The interaction potential was determined by evaluating the distance distribution of two adatoms from a series of scanning tunneling microscopy images taken at temperatures of 9-21 K. The long-range interaction is oscillatory with a period of half the Fermi wavelength and decays for larger distances d as 1/d(2). Five potential minima were identified for separations of up to 70 A. The interaction significantly changes the growth of Cu/Cu(111) at low temperatures.
authors.affiliation: Institut fur Experimentalphysik, Freie Universitat Berlin, Arnimallee 14, D-14195 Berlin, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Repp
authors.forename: F
authors.initials: F
authors.lastname: Moresco
authors.forename: G
authors.initials: G
authors.lastname: Meyer
authors.forename: K H
authors.initials: KH
authors.lastname: Rieder
authors.forename: P
authors.initials: P
authors.lastname: Hyldgaard
authors.forename: M
authors.initials: M
authors.lastname: Persson