Kinetics of Exciton Emission Patterns and Carrier Transport

Abstract

We report on the measurements of the kinetics of expanding and collapsing rings in the exciton emission pattern. The rings are found to preserve their integrity during expansion and collapse, indicating that the observed kinetics is controlled by charge carrier transport rather than by a much faster process of exciton production and decay. The relation between ring kinetics and carrier transport, revealed by our experiment and confirmed by comparison with a theoretical model, is used to determine electron and hole transport characteristics in a contactless fashion.

6 pages, 4 figures

References in corpus (5)

• Coulomb Drag in the Exciton Regime in Electron-Hole Bilayers
• Anomalous Coulomb drag in electron-hole bilayers
• Exciton condensate at a total filling factor of 1 in Corbino 2D electron bilayers
• Kinetics of the inner ring in the exciton emission pattern in GaAs coupled quantum wells
• Theory of superfast fronts of impact ionization in semiconductor structures

Cited by in corpus (12)

• Pattern Formation in the Exciton Inner Ring
• Supersolidity in electron-hole bilayers with a large density imbalance
• Drift-diffusion model of the fragmentation of the external ring structure in the photoluminescence pattern of indirect excitons in coupled quantum wells
• Theory of condensation of indirect excitons in a trap
• Fluctuation and Commensurability Effect of Exciton Density Wave
• Pseudo diamagnetism of four component exciton condensates
• Excitation Energy Dependence of the Exciton Inner Ring
• Diffusion-controlled formation and collapse of a d-dimensional A-particle island in the B-particle sea
• Transport of Indirect Excitons in High Magnetic Fields
• Exciton correlations and input-output relations in non-equilibrium exciton superfluids
• Diffusion-controlled coalescence, fragmentation and collapse of $d$-dimensional $A$-particle islands in the $B$-particle sea
• Ring-shaped spatial pattern of exciton luminescence formed due to the hot carrier transport in a locally photoexcited electron-hole bilayer