title: Localization of the Cu111 surface state by single Cu adatoms.
abstract: The Cu adatom-induced localization of the two-dimensional Shockley surface state at the Cu(111) surface was identified from experimental and simulated scanning tunneling microscopy spectra. The localization gives rise to a resonance located just below the surface state band edge. The adatom-induced surface state localization is discussed in terms of the existence theorem for bound states in any attractive two-dimensional potential. We also identify adatom-induced resonance states deriving from atomic orbitals in both experimental and simulated spectra.
authors.affiliation: Department of Applied Physics, Chalmers/Göteborg University, S-41296 Göteborg, Sweden.
authors.forename: F E
authors.initials: FE
authors.lastname: Olsson
authors.forename: M
authors.initials: M
authors.lastname: Persson
authors.forename: A G
authors.initials: AG
authors.lastname: Borisov
authors.forename: J-P
authors.initials: JP
authors.lastname: Gauyacq
authors.forename: J
authors.initials: J
authors.lastname: Lagoute
authors.forename: S
authors.initials: S
authors.lastname: Fölsch