Radiative lifetimes of dipolar excitons in double quantum-wells
arXiv:1610.05481 · doi:10.1103/PhysRevB.95.155302
Abstract
Spatially indirect excitons in semiconducting double quantum wells have been shown to exhibit rich collective many-body behavior that result from the nature of the extended dipole-dipole interactions between particles. For many spectroscopic studies of the emission from a system of such indirect excitons, it is crucial to separate the single particle properties of the excitons from the many-body effects arising from their mutual interactions. In particular, knowledge of the relation between the emission energy of indirect excitons and their radiative lifetime could be highly beneficial for control, manipulation, and analysis of such systems. Here we study a simple analytic approximate relation between the radiative lifetime of indirect excitons and their emission energy. We show, both numerically and experimentally, the validity and the limits of this approximate relation. This relation between the emission energy and the lifetime of indirect excitons can be used to tune and determine their lifetime and their resulting dynamics without the need of directly measuring it, and as a tool for design of indirect exciton based devices.
arXiv comment* Added references. * Corrected the Al content mentioned as the sample's and used in Sec. II
References in corpus (25)
- Observation of Long-Lived Interlayer Excitons in Monolayer MoSe2-WSe2 Heterostructures
- Macroscopically ordered state in exciton system
- Bose-Einstein condensation in semiconductors: the key role of dark excitons
- Exciton correlations in coupled quantum wells and their luminescence blue shift
- Direct and indirect excitons in semiconductor coupled quantum wells in an applied electric field
- Negative Coulomb Drag in Double Bilayer Graphene
- Evidence for a Bose-Einstein condensate of excitons
- Trapping of Cold Excitons with Laser Light
- Spin Texture in a Cold Exciton Gas
- Spin currents in a coherent exciton gas
- Exciton Liquid in Coupled Quantum Wells
- Particle correlations and evidence for dark state condensation in a cold dipolar exciton fluid
- Electrostatic Conveyer for Excitons
- Electrostatic traps for dipolar excitons
- Spin transport of indirect excitons in GaAs coupled quantum wells
- Spin transport of indirect excitons
- A dark incompressible dipolar liquid of excitons
- Electrically controlled mutual interactions of flying waveguide dipolaritons
- Dynamics of indirect exciton transport by moving acoustic fields
- Remote Dipolar Interactions for Objective Density Calibration and Flow Control of Excitonic Fluids
- Excitonic photoluminescence in symmetric coupled double quantum wells subject to an external electric field
- Long exciton spin memory in coupled quantum wells
- Dipolar polaritons in microcavity-embedded coupled quantum wells in electric and magnetic fields
- Adiabatic preparation of a cold exciton condensate
- Vertically-coupled dipolar exciton molecules
Cited by in corpus (8)
- Localized bright luminescence of indirect excitons and trions in MoSe/WSe van der Waals heterostructure
- Attractive dipolar coupling between stacked exciton fluids
- High-mobility indirect excitons in wide single quantum well
- Split-gate device for indirect excitons
- Electrically controlled photonic circuits of field-induced dipolaritons with huge nonlinearities
- Transition from spin-orbit to hyperfine dominated spin relaxation in a cold fluid of dipolar excitons
- Condensation to a strongly correlated dark fluid of two dimensional dipolar excitons
- Direct and indirect exciton mixture in double quantum wells