Resonant photoelectron spectroscopy on CoO

Abstract

Resonant photoelectron spectroscopy data from in situ cleaved CoO single crystals are presented. Valence band data collected at photon energies corresponding to Co 2p3/2 are discussed in comparison with a cluster model calculation and quantitative estimates of the model parameters are given. No valence band resonance is observed at the O 1s absorption threshold but the similarity between the observed Auger lines and those previously observed for NiO confirm the similarity between the O valence band states in the two materials.