Local and electronic structure of FeS, CoS, NiS: Ultrasoft sulfur L2,3 X-ray absorption spectra analysis

The ultrasoft S L2,3 X--ray absorption near--edge structure (XANES) spectra of FeS, CoS and NiS having the NiAs--type crystal structure have been measured and theoretical analysis of the experimental data has been done on the basis of full multiple scattering theory. The distribution of local partial density of electronic states has been established. A special kind of hybridization between metal 3d and sulfur p states has been found: sulfur p states are ''squeezed out'' of the energy region of the maximum of metal d electronic states.