Revisiting the valence-band and core-level photoemission spectra of NiO

Abstract

We have re-examined the valence-band (VB) and core-level electronic structure of NiO by means of hard and soft x-ray photoemission spectroscopy (PES). The spectral weight of the lowest energy state found to be enhanced in the bulk sensitive Ni 2p core-level PES. A configuration-interaction model including the bound state screening has shown significant agreement with the core-level spectra, and the off and on-resonance VB spectra. These results identify the lowest energy state in core-level and VB-PES as the Zhang-Rice doublet bound state, consistent with the spin-fermion model and recent ab initio calculation with dynamical mean-field theory (LDA + DMFT).

4 pages, 3 figures

References in corpus (4)

• NiO: Correlated Bandstructure of a Charge-Transfer Insulator
• LDA+DMFT computation of the electronic spectrum of NiO
• Bulk screening in core level photoemission from Mott-Hubbard and Charge-Transfer systems
• Calculated Momentum Dependence of Zhang-Rice States in Transition Metal Oxides

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