Resonant photoemission and the mechanism of photon-stimulated ion desorption in a transition-metal oxide

Abstract

The Cr 3p excitation spectrum has been studied in the Cr(110) surface oxide using synchrotron radiation in the photon-energy range 40--75 eV. The photon-stimulated-desorption ${\mathrm{O}}^{+}$ yield from the surface is seen to be sensitive to the electronic configuration of the Cr 3p core-hole state. The results are discussed in the context of the competitive decay processes which also depend on the electronic configuration of the 3p core-hole state.