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Electronic structure of self-assembled InGaAs/GaAs quantum rings studied by capacitance-voltage spectroscopy

Lei, Wen; Nothoff, C; Lorke, A; Reuter, D; Wieck, Andreas Dirk


Self-assembled InGaAs quantum rings, embedded in a GaAs matrix, were investigated using magneto-capacitance-voltage spectroscopy. The magnetic-field dispersion of the charging energies exhibits characteristic features for both the first and second electron, which can be attributed to a ground state transition from l=0 into l=-1, and a ground state transition from l=-1 into l=-2, respectively. Furthermore, using a combination of capacitance-voltage spectroscopy and one-dimensional numerical...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.3293445


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