Electronic structure of the light actinide oxides from electron spectroscopy (invited)
- 15 April 1988
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 63 (8) , 3676-3679
- https://doi.org/10.1063/1.340683
Abstract
The 4f core level spectra of ThO2, UO2, and NpO2 are shown to be well described in the Anderson impurity model. The O(2p)-actinide (5f ) hybridization is found to be very large. This leads to a new interpretation of the 7-eV satellite in the 4f spectrum, which corresponds to an antibonding 5f n−5f n+1 final state, where n=0,2, and 3 for ThO2, UO2, and NpO2, respectively. The resonance photoemission 4f spectrum is studied, and it is found that interference between different intermediate states is crucial for its interpretation. In particular, the photon energy dependence (CIS spectrum) is strongly influenced by these interference effects. In the 5f valence spectrum of UO2 the theory gives a satellite, which is due to a split-off state caused by the large hybridization.This publication has 24 references indexed in Scilit:
- Resonance photoemission forf-electron systemsPhysical Review B, 1987
- Systematics in the core level spectra of Th-intermetallicsZeitschrift für Physik B Condensed Matter, 1986
- The band structure of UO2: An angle resolved and resonant photoemission studyJournal of the Less Common Metals, 1986
- Electronic structure of cerium and light rare-earth intermetallicsAdvances in Physics, 1986
- Core-level spectra of Th compoundsPhysical Review B, 1985
- Double occupancy of theforbital in the Anderson model for Ce compoundsPhysical Review B, 1985
- Resonant photoemission processes at the 3dedge in(111)Physical Review B, 1985
- XPS evidence for 5f bonding participation in UO2Journal of Electron Spectroscopy and Related Phenomena, 1982
- -Electron Localization in Uranium CompoundsPhysical Review Letters, 1981
- Molecular orbital studies of the electronic structure of lanthanide and actinide complexes—III chemical bonding and satellite structure in the X-ray photoelectron spectrum of uranium dioxideJournal of Inorganic and Nuclear Chemistry, 1979