X-ray photoemission measurements of La{sub 1{minus}{ital x}}Ca{sub {ital x}}CoO{sub 3} ({ital x}=0, 0.5)
Journal Article
·
· Physical Review, B: Condensed Matter
- Center for Space Microelectronics Technology, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109-8099 (United States)
X-ray photoemission measurements of the core levels and valence electronic structure of LaCoO{sub 3} and La{sub 0.5}Ca{sub 0.5}CoO{sub 3} high quality epitaxial films are presented. Shifts of the core levels and main valence band features are consistent with a doping-induced change in the chemical potential. Oxygen states are found to significantly contribute to a peak in the valence band at 1 eV binding energy, verifying earlier results of cluster calculations. A Fermi level crossing of this same band upon doping is observed, yielding a high Fermi level density of states. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 397591
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 21 Vol. 54; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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