Volume 39, Number 4, August II 1997
|Page(s)||429 - 434|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Correlation satellite driven by reduced dimensionality
BESSY-Lentzeallee 100, D-14195 Berlin, Germany
2 Department of Physics, University of Tokyo - 7-3-1 Hongo, Tokyo, 113 Japan
3 Institut für Festkörperforschung, Forschungszentrum Jülich - D-52425 Jülich, Germany
4 Institut für Grenzflächenforschung und Vakuumphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
5 IBM Thomas J. Watson Research Center-Yorktown Heights, NY 10598
6 Institute for Solid State Physics, University of Tokyo 7-22-1 Roppongi,Tokyo 106, Japan
Accepted: 8 July 1997
Photoelectron spectra of the ordered surface alloy CuMn/ Cu(100) show distinct valence band spectral features at higher binding energy, which are most pronounced for the optimal CuMn superstructure at half-monolayer Mn deposition. Our analysis comprising resonant photoemission, core level photoemission, inverse photoemission, first-principles local-density calculations, and configuration-interaction cluster-model calculations shows that the data represent the first observation of a valence band satellite caused by the increased electron correlation in an ultrathin metal film.
PACS: 73.20.Hb – Impurity and defect levels; energy states of adsorbed species / 79.60.Dp – Adsorbed layers and thin films / 75.30.Pd – Surface magnetism
© EDP Sciences, 1997
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