On the absence of resonance in the valence band photoemission at L2 resonance edge and the delayed onset of the normal Auger-decay

Abstract

No clear resonance is present in the resonant valence band photoemission spectrum of a Mn6 (S=4) single molecule magnet grafted on Au (111) for photon energy at the L2 resonance edge. This is due to the L2-hole’s dominant decay by the L2–L3V Coster–Kronig (CK) decay. The excess energy of the photon at which the Mn resonant Raman scattering regime transits to the normal Mn Auger-decay regime in MnO depends on the Mn Auger-decay channels. This is because of the localization and delocalization of two holes in the Auger final states. The Mn resonant Auger-electron spectroscopy spectra of MnO are analyzed.