Excitation Energy Dependence of the Exciton Inner Ring
arXiv:1202.3096 · doi:10.1103/PhysRevB.85.165452
Abstract
We report on the excitation energy dependence of the inner ring in the exciton emission pattern. The contrast of the inner ring is found to decrease with lowering excitation energy. Excitation by light tuned to the direct exciton resonance is found to effectively suppress excitation-induced heating of indirect excitons and facilitate the realization of a cold and dense exciton gas. The excitation energy dependence of the inner ring is explained in terms of exciton transport and cooling.
arXiv comment5 pages, 4 figures
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- Pattern Formation in the Exciton Inner Ring
- Attractive and repulsive dipolar interaction in bilayers of indirect excitons
- Spatially and time-resolved imaging of transport of indirect excitons in high magnetic fields
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