title: Surface-state depopulation on small Ag(111) terraces.
abstract: The dependence of the local density of states near the Fermi energy E(F) on the width of terraces T is investigated by tunneling scanning spectroscopy on Ag(111) at 7 K. With decreasing T, the electronic density in the occupied surface state shifts monotonically towards E(F), leading to a depopulation at T=3.2 nm in quantitative agreement with a Fabry-Pérot model. Depopulation coincides with a switch from confinement by terrace modulation to step modulation.
authors.affiliation: Institut für Experimentalphysik, FB Physik, Freie Universität Berlin, Arnimallee 14, Germany.
authors.forename: Karina
authors.initials: K
authors.lastname: Morgenstern
authors.forename: Kai-Felix
authors.initials: KF
authors.lastname: Braun
authors.forename: Karl-Heinz
authors.initials: KH
authors.lastname: Rieder