Journal
PHYSICAL REVIEW B
Volume 78, Issue 16, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.165127
Keywords
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Funding
- Department of Energy [DE-FG02-98ER45680]
- Donors of the American Chemical Society Petroleum Research Fund
- Director, Office of Science, Office of Basic Energy Sciences of the U. S. Department of Energy [DE AC0205CH11231]
- Engineering and Physical Sciences Research Council, U. K. [EP/E010210/1]
- European Community [NMP4-CT-2004-500198]
- Deutsche Forschungsgemeinschaft [BE1346/18-2]
- Carl-Zeiss-Stifung
- Spanish Government [MAT2004-06841]
- EPSRC [EP/E031595/1, EP/E010210/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E031595/1, EP/E010210/1, EP/C535553/1] Funding Source: researchfish
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The electronic structure of well-ordered single-crystal thin films of CdO(100) has been studied using angle-resolved photoemission spectroscopy. Quantized electron subbands are observed above the valence-band maximum. The existence of these states provides evidence of an intrinsic electron accumulation space-charge layer near the CdO surface, an interpretation supported by coupled Poisson-Schrodinger calculations. The origin of the accumulation layer result is discussed in terms of the bulk band structure of CdO calculated using quasiparticle-corrected density-functional theory, which reveals that the conduction-band minimum at the Brillouin-zone center lies below the charge neutrality level.
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