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Observation of quantized subband states and evidence for surface electron accumulation in CdO from angle-resolved photoemission spectroscopy
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Piper, L. F. J., Colakerol, Leyla, King, P. D. C., Schleife, A., Zuniga-Perez, J., Glans, Per-Anders, Learmonth, Tim, Federov, A., Veal, T. D., Fuchs, F., Munoz-Sanjose, V., Bechstedt, F., McConville, C. F. and Smith, Kevin E.. (2008) Observation of quantized subband states and evidence for surface electron accumulation in CdO from angle-resolved photoemission spectroscopy. Physical Review B (Condensed Matter and Materials Physics), Vol.78 (No.16). Article No. 165127. ISSN 1098-0121
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Official URL: http://dx.doi.org/10.1103/PhysRevB.78.165127
Abstract
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.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science > Physics |
| Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) |
| Publisher: | American Physical Society |
| ISSN: | 1098-0121 |
| Date: | October 2008 |
| Volume: | Vol.78 |
| Number: | No.16 |
| Number of Pages: | 5 |
| Page Range: | Article No. 165127 |
| Identification Number: | 10.1103/PhysRevB.78.165127 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| Funder: | Department of Energy, 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, Engineering and Physical Sciences Research Council (EPSRC), European Community, Deutsche Forschungsgemeinschaft (DFG), Carl-Zeiss-Stifung, Spanish Government |
| Grant number: | DE-FG02-98ER45680, DE AC0205CH11231, EP/E010210/1 (EPSRC), NMP4-CT-2004-500198, BE1346/18-2, MAT2004-06841 |
| URI: | http://wrap.warwick.ac.uk/id/eprint/29058 |
Data sourced from Thomson Reuters' Web of Knowledge
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