Particle correlations and evidence for dark state condensation in a cold dipolar exciton fluid
arXiv:1305.2895 · doi:10.1038/ncomms3335
Abstract
In this paper we show experimental evidence of a few correlation regimes of a cold dipolar exciton fluid, created optically in a semiconductor bilayer heterostructure. In the higher temperature regime, the average interaction energy between the particles shows a surprising temperature dependence which is an evidence for correlations beyond the mean field model. At a lower temperature, there is a sharp increase in the interaction energy of optically active excitons, accompanied by a strong reduction in their apparent population. This is an evidence for a sharp macroscopic transition to a dark state as was suggested theoretically.
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- Attractive dipolar coupling between stacked exciton fluids
- Theory of condensation of indirect excitons in a trap
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- Coherent transport and manipulation of spins in indirect exciton nanostructures
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- High-mobility indirect excitons in wide single quantum well
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- Giant Hyperfine Interaction between a Dark Exciton Condensate and Nuclei