Resonant behavior of O 1s x-ray emission spectrum (XES) in Cu-based oxides, such as CuGeO3 and Li2CuO2, is investigated through the model calculations using an edge-sharing Cu2O6 cluster. It is shown that the inelastic peaks that originate from the Cu d-d excitations and the Zhang-Rice singlet excitation can be observed on resonance, which indicates the importance of the many-body effects in discussing the O 1s resonant XES. It is shown that the Zhang-Rice singlet state can be excited in the O 1s XES final state when the Cu spins configuration around the irradiated O site is antiferromagnetic. Therefore the experiment at low temperatures is highly desired.
|Number of pages
|Physical Review B - Condensed Matter and Materials Physics
|Published - Jan 1 2001
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics