title: Theory of oxygen 1s resonant X-ray emission spectroscopy in copper-based oxides.
abstract: Many-body effects on the oxygen 1s resonant x-ray emission spectrum (O 1s RXES) in copper-based oxides, such as Sr2CuO3 and La2CuO4, are discussed on the basis of cluster-model calculations. The Zhang-Rice singlet excitation, which is a typical many-body state in Cu-based oxide systems, can be detected at low temperatures where the antiferromagnetic correlation between the neighboring Cu spins is strong. Thus the present study emphasizes that the O 1s RXES can be a good tool to obtain information on the Cu 3d states. In particular the polarization-dependent RXES gives the symmetry-decomposed information.
authors.affiliation: Department of Physics, Okayama University, Japan. kozo@cc.okayama-u.ac.jp
authors.forename: K
authors.initials: K
authors.lastname: Okada
authors.forename: A
authors.initials: A
authors.lastname: Kotani