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Título: | Many-body effects in the excitation spectrum of a defect in SiC |
Autor: | Bockstedte, Michel; Marini, Andrea; Pankratov, Oleg; Rubio, Angel CSIC ORCID | Fecha de publicación: | jul-2010 | Editor: | American Physical Society | Citación: | Physical Review Letters 105(2): 026401 (2010) | Resumen: | We show that electron correlations control the photophysics of defects in SiC through both renormalization of the quasiparticle band structure and excitonic effects. We consider the carbon vacancy with two possible excitation channels that involve conduction and valence bands. Corrections to the Kohn-Sham ionization levels strongly depend on the defect charge state. Excitonic effects introduce a redshift of 0.23 eV. The analysis reassigns excitation mechanism at the thresholds in photoinduced paramagnetic resonance measurements | Descripción: | 4 páginas, 3 figuras, 2 tablas.-- PACS numbers: 71.35.-y, 71.55.-i, 76.30.Mi | Versión del editor: | http://dx.doi.org/10.1103/PhysRevLett.105.026401 | URI: | http://hdl.handle.net/10261/39061 | DOI: | 10.1103/PhysRevLett.105.026401 | ISSN: | 0031-9007 | E-ISSN: | 1079-7114 |
Aparece en las colecciones: | (CFM) Artículos |
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Many-body effects.pdf | 283,16 kB | Adobe PDF | Visualizar/Abrir |
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