Theory of core photoemission spectra in CeO2 |
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Authors: | A. Kotani H. Mizuta T. Jo J.C. Parlebas |
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Affiliation: | Department of Physics, Faculty of Science, Osaka University, Toyonaka 560, Japan;LMSES (LA CNRS n° 306), Université Louis Pasteur, 67070 Strasbourg Cedex, France |
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Abstract: | By using the Anderson model with a filled valence band, we calculate the core photoemission spectra of CeO2, and compare them with experimental results. It is shown that in the ground state of CeO2 the 4?0 and 4?1 configurations are mixed strongly due to the large hybridization between the 4? states and the valence band. In the final state of the photoemission, the 4?1 and 4?2 configurations are also mixed strongly due to the final state interaction coming from a core hole potential and the large hybridization. The fractional intensity of the 4?0 photoemission peak is considerably different from the weight of the 4?0 configuration in the ground state because of the strong final state interaction. |
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