Theory of photoluminescence from modulation-doped self-assembled quantum dots in a magnetic field

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DOIResolve DOI: https://doi.org/10.1103/PhysRevB.55.13066
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  1. National Research Council Canada. NRC Institute for Microstructural Sciences
FormatText
TypeArticle
Journal titlePhysical Review B
ISSN0163-1829
1095-3795
Volume55
Issue19
Pages13066–13071
Abstract
We study the effect of free carriers on photoluminescence from modulation-doped self-assembled quantum dots. Exact diagonalization studies of up to N=8 electrons and a single exciton in InAs self-assembled dots, and a Hartree-Fock calculations for up to N=20 electrons, are carried out. The total spin and total angular momentum are found to oscillate with the number of electrons. The photoluminescence spectrum is calculated and the band-gap renormalization in zero-dimensional systems is discussed. The tendency of electrons in degenerate, partially filled electronic shells to maximize the total spin leads to a strong dependence of the spectrum on the number of electrons N, the magnetic field B, and the polarization of light.
Publication date
PublisherAmerican Physical Society
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LanguageEnglish
Peer reviewedYes
NPARC number23002965
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Record modified2019-03-11
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