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Título: | Emission from neutral and charged excitons in a single quantum dot in a magnetic field |
Autor: | Schulhauser, C.; Warburton, Richard J.; Högele, A.; Govorov, Alexander O.; Karrai, Khaled; García Martínez, Jorge Manuel CSIC ORCID CVN ; Gerardot, B. D.; Petroff, Pierre M. | Palabras clave: | Spectroscopy Quantum dots Photoluminescence Magnetic properties |
Fecha de publicación: | mar-2004 | Editor: | Elsevier | Citación: | Physica E 21(2-4): 184-188 (2004) | Resumen: | We report on optical spectroscopy of self-assembled InAs quantum dots in a magnetic field. We describe how we measure the emission characteristics of a single quantum dot (QD) in high magnetic fields at low temperature using a miniature, fiber-based confocal microscope. Example results are presented on a QD whose charge can be controlled using a field-effect device. For the uncharged, singly and doubly charged excitons we find a diamagnetism and the spin Zeeman effect. In contrast, for the triply-charged exciton we find a fundamentally different behavior. Anti-crossings in magnetic field imply that confined states of the QD are hybridized with Landau-like levels associated with the two-dimensional continuum. | Descripción: | 5 páginas, 5 figuras.-- PACS: 78.67.Hc; 73.40.Rw; 78.66.Fd | Versión del editor: | http://dx.doi.org/10.1016/j.physe.2003.11.009 | URI: | http://hdl.handle.net/10261/32007 | DOI: | 10.1016/j.physe.2003.11.009 | ISSN: | 1386-9477 |
Aparece en las colecciones: | (IMN-CNM) Artículos |
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