Loss structures in the photoemission spectra of MnO: A careful analysis ofpeak intensities

A careful and rigorous analysis of the intensities of several features of t he Mn 3s x-ray photoemission spectra of MnO, including the satellites at 20 -30 eV below the main exchange split peaks is carried out. The previous int erpretation of the 20-30 eV satellite is that they arose from electron corr elation effects relative to the near degeneracy of the atomic levels. Our w ork shows that loss processes must also be taken into account. In particula r, it is shown that only about 60% of the broad 20-30 eV satellite is due t o near degeneracy correlation effects, while a contribution from the shakeu p and plasmon loss structures constitutes the remaining 40% of the intensit ies of this feature.