期刊
PHYSICAL REVIEW B
卷 97, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.97.155102
关键词
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资金
- Marie Curie FP7 Integration Grant within the 7th European Union Framework Programme
- GENCI [544]
- DOE BES Grant [DE-FG02-97ER45623]
- U.S. Department of Energy (DOE) [DE-FG02-97ER45623] Funding Source: U.S. Department of Energy (DOE)
The longstanding problem of interpretation of satellite structures in core-level photoemission spectra of metallic systems with a low density of conduction electrons is addressed using the specific example of Sb-doped SnO2 . Comparison of ab initio many-body calculations with experimental hard x-ray photoemission spectra of the Sn 4d states shows that strong satellites are produced by coupling of the Sn core hole to the plasma oscillations of the free electrons introduced by doping. Within the same theoretical framework, spectral changes of the valence band spectra are also related to dynamical screening effects. These results demonstrate that, for the interpretation of electron correlation features in the core-level photoelectron spectra of such narrow-band materials, going beyond the homogeneous electron gas electron-plasmon coupling model is essential.
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