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Título: | Absorption and photoluminescence spectroscopy on a single self-assembled charge-tunable quantum dot |
Autor: | Seidl, Stefan; Kroner, M.; Dalgarno, P. A.; Högele, A.; Smith, J. M.; Ediger, M.; Gerardot, B. D.; García Martínez, Jorge Manuel CSIC ORCID CVN ; Petroff, Pierre M.; Karrai, Khaled; Warburton, Richard J. | Palabras clave: | Spectroscopy Quantum dots |
Fecha de publicación: | 28-nov-2005 | Editor: | American Physical Society | Citación: | Physical Review B 72: 195339 (2005) | Resumen: | We have performed detailed photoluminescence (PL) and absorption spectroscopy on the same single self-assembled quantum dot in a charge-tunable device. The transition from neutral to charged exciton in the PL occurs at a more negative voltage than the corresponding transition in absorption. We have developed a model of the Coulomb blockade to account for this observation. At large negative bias, the absorption broadens as a result of electron and hole tunneling. We observe resonant features in this regime whenever the quantum dot hole level is resonant with two-dimensional hole states located at the capping layer-blocking barrier interface in our structure. | Versión del editor: | http://link.aps.org/doi/10.1103/PhysRevB.72.195339 http://dx.doi.org/10.1103/PhysRevB.72.195339 |
URI: | http://hdl.handle.net/10261/19175 | DOI: | 10.1103/PhysRevB.72.195339 | ISSN: | 1098-0121 |
Aparece en las colecciones: | (IMN-CNM) Artículos |
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Fichero | Descripción | Tamaño | Formato | |
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Seidl, S. et al Phys.Rev.B_72_2005.pdf | 438,14 kB | Adobe PDF | Visualizar/Abrir |
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