Valence-band photoemission and its spin polarization of insulating Ni (Ni²⁺:d⁸) compounds are studied by considering configuration interactions within the Ni-ligand cluster. It is found that the main lines, which have been assigned to d-hole (d⁷) final states, are due to final states where the d hole is screened by a ligand-to-d charge transfer and that the satellite contains significant d⁷ character. Effects of these final-state interactions on the multiplet structure and the spin polarization are discussed.
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Fujimori et al. (1984) studied this question.
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