Abstract
Gold was evaporated onto a Cu(001) surface at room temperature and studied with angle resolved photoelectron spectroscopy, using synchrotron radiation as the excitation, as well as low energy electron diffraction and Auger electron spectroscopy. Measurements include the probing of the dependencies of valence band binding energies upon coverage and photon energy. At a Au coverage of 12 monolayers, the spectra and valence band dispersion relations (using hv=8−32 eV) of the surface were found to be very similar to those of bulk Au(111). The valence band spectra, collected using hv=110 eV radiation, confirm that assessment. At coverages from one to six monolayers, the valence band structure was observed to undergo significant changes with coverage. A feature corresponding to the Au(111) surface state was prominent at coverages of two or more monolayers.
Published Version
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