Resonant Photoemission in Transition Metal Bromides

Abstract

Resonant photoemission in the bromides of Ni, Co, Fe and Mn has been observed for excitations near the 3p thresholds of the metal ions. Resonance occurs all over the valence band spectra including satellites, and the resonance excitation spectra are similar to those observed in the chlorides. Some features in the main bands shift toward high-binding-energy side upon resonance. This shift gives rise to increase in the crystal field splitting on resonance for NiBr₂, FeBr₂ and MnBr₂, but decrease for CoBr₂; Racah parameters increase on resonance in all the bromides observed here.