Influence of
surface morphology on surface states for Cu on Cu(111)
Th. Fauster, Ch. Reuß, I. L. Shumay, M. Weinelt, F.
Theilmann, and A. Goldmann
Phys. Rev.
B 61, 13168 (2000).
We have exploited angle-resolved one-photon photoemission,
two-photon photoemission, and spot-profile analysis of low-energy
electron diffraction to monitor the influence of surface
morphology on the occupied and empty surface states observed at
on
Cu(111). Surface morphology changes were induced by homoepitaxial
growth of Cu on Cu(111). A simple model of electron localization
on terraces successfully explains energy shifts and linewidth
broadening of both surface states. Obviously, surface states may
be used as sensitive probes of terrace-width distributions and
other structural properties.