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Inhibited Recombination of Charged Magnetoexcitons

H. Okamura·D. Heiman·M. Sundaram·A. C. Gossard
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Abstract

Time-resolved photoluminescence measurements show that the decay time for charged excitons in a GaAs two-dimensional electron gas increases by an order of magnitude at high magnetic fields. Unlike neutral excitons, the charged exciton center-of-mass is spatially confined in a ``magnetically-adjustable quantum dot'' by the cyclotron orbit and the quantum well. The inhibited recombination is explained by a reduced phase coherence volume of the magnetically-confined charged excitons.

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H. Okamura, D. Heiman, M. Sundaram, A. C. Gossard. 1998-10-09. Inhibited Recombination of Charged Magnetoexcitons. https://doi.org/10.1103/physrevb.58.r15985

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