Charged and neutral excitons in natural quantum dots in the InAs/GaAs wetting Layer

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Proceedings titlePhysica E: Low-dimensional Systems and Nanostructures
Conference13th International Conference on Modulated Semiconductor Structures, July 15–20, 2007, Genova, Italy
Pages20782080; # of pages: 3
AbstractMagnetospectroscopic studies of the InAs/GaAs wetting layer (WL) accompanying self-organized quantum dots (QDs) grown in Stranski–Krastanow mode are presented. Sharp emission lines from “natural” QDs formed in the WL are observed and their evolution in magnetic field is investigated. A quadruplet or a doublet splitting of the emission lines has been observed in magnetic field, which is attributed to a charged and a neutral exciton in a single dot. The metastable transformation of the spectrum from the former to the latter configuration has been observed and explained in terms of the charging of a single dot.
Publication date
AffiliationNational Research Council Canada; NRC Institute for Microstructural Sciences
Peer reviewedYes
NPARC number12346559
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Record identifierdcfd012b-7af1-4cb9-aae9-cf2f7fe6e5d6
Record created2009-09-17
Record modified2016-05-09
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