title: Size-dependent surface states of strained cobalt nanoislands on Cu(111).
abstract: Low-temperature scanning tunneling spectroscopy over Co nanoislands on Cu(111) showed that the surface states of the islands vary with their size. Occupied states exhibit a sizable downward energy shift as the island size decreases. The position of the occupied states also significantly changes across the islands. Atomic-scale simulations and ab initio calculations demonstrate that the driving force for the observed shift is related to size-dependent mesoscopic relaxations in the nanoislands.
authors.affiliation: Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504, Université Louis Pasteur, F-67034 Strasbourg, France.
authors.forename: M V
authors.initials: MV
authors.lastname: Rastei
authors.forename: B
authors.initials: B
authors.lastname: Heinrich
authors.forename: L
authors.initials: L
authors.lastname: Limot
authors.forename: P A
authors.initials: PA
authors.lastname: Ignatiev
authors.forename: V S
authors.initials: VS
authors.lastname: Stepanyuk
authors.forename: P
authors.initials: P
authors.lastname: Bruno
authors.forename: J P
authors.initials: JP
authors.lastname: Bucher