Pattern formation of indirect excitons in coupled quantum wells

Abstract

Using a nonlinear Schrödinger equation including short-range two-body attraction and three-body repulsion, we investigate the spatial distribution of indirect excitons in semiconductor coupled quantum wells. The results obtained can interpret the experimental phenomenon that annular exciton cloud first contracts then expands when the number of confined excitons is increased in impurity potential well, as observed by Lai \emph{et al.} [Lai $etal.$, Science \textbf{303}, 503 (2004)]. In particular, the model reconciles the patterns of exciton rings reported by Butov \emph{et al.} [Butov $etal.$, Nature \textbf{418}, 751 (2002)]. At higher densities, the model predicts much richer patterns, which could be tested by future experiments.

5 Revtex4 pages, 3 figures

References in corpus (5)

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Cited by in corpus (9)

• Analysis of the exciton-exciton interaction in semiconductor quantum wells
• Fragmented-condensate solid of dipolar excitons
• Scale invariance and universality in a cold gas of indirect excitons
• Autolocalization in a dipolar exciton system
• Model of fragmentation of the exciton inner ring in semiconductor quantum wells
• Theoretical modeling of spatial and temperature dependent exciton energy in coupled quantum wells
• Exciton condensation in quantum wells. Exciton hydrodynamics. The effect of localized states
• Amplification and passing through the barrier of the exciton condensed phase pulse in double quantum wells
• Detecting an exciton crystal by statistical means