Pattern Formation as a Signature of Quantum Degeneracy in a Cold Exciton System
arXiv:cond-mat/0403377 · doi:10.1103/PhysRevLett.94.176404
Abstract
The development of a Turing instability to a spatially modulated state in a photoexcited electron-hole system is proposed as a novel signature of exciton Bose statistics. We show that such an instability, which is driven by kinetics of exciton formation, can result from stimulated processes that build up near quantum degeneracy. In the spatially uniform 2d electron-hole system, the instability leads to a triangular lattice pattern while, at an electron-hole interface, a periodic 1d pattern develops. We analyze the mechanism of wavelength selection, and show that the transition is abrupt (type I) for the uniform 2d system, and continuous (type II) for the electron-hole interface.
arXiv comment5 pages, 3 figures
References in corpus (6)
- Macroscopically ordered state in exciton system
- Exciton condensate in semiconductor quantum well structures.
- Bose-Einstein statistics in thermalization and photoluminescence of quantum well excitons
- Auger decay of degenerate and Bose-condensed excitons in CuO
- Turing Instability in a Boundary-fed System
- Numerical Bifurcation Diagram for the Two-Dimensional Boundary-fed CDIMA System
Cited by in corpus (27)
- Exciton diffusion and halo effects in monolayer semiconductors
- Drift mobility of long-living excitons in coupled GaAs quantum wells
- Coherence Length of Cold Exciton Gases in Coupled Quantum Wells
- Exciton storage in a nano-scale Aharonov-Bohm ring with electric field tuning
- Kinetics of the inner ring in the exciton emission pattern in GaAs coupled quantum wells
- Pattern formation of indirect excitons in coupled quantum wells
- Ring-shaped luminescence pattern in biased quantum wells studied as a steady state reaction front
- Fragmented-condensate solid of dipolar excitons
- On the microscopic theory of the exciton ring fragmentation
- The Interaction in the Macroscopically Ordered Exciton State
- Drift-diffusion model of the fragmentation of the external ring structure in the photoluminescence pattern of indirect excitons in coupled quantum wells
- Turing instability in quantum activator-inhibitor systems
- Fluctuation and Commensurability Effect of Exciton Density Wave
- Superfluidity of two- dimensional excitons in flat and harmonic traps
- Excitation Energy Dependence of the Exciton Inner Ring
- Autolocalization in a dipolar exciton system
- Model of fragmentation of the exciton inner ring in semiconductor quantum wells
- Atomic lattice excitons: from condensates to crystals
- Adiabatic preparation of a cold exciton condensate
- Theoretical modeling of spatial and temperature dependent exciton energy in coupled quantum wells
- Pattern Formation in Exciton System near Quantum Degeneracy
- Coherent exciton transport in semiconductors
- Quantum Phase Transition of the Electron-Hole Liquid In the 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
- Ring-shaped spatial pattern of exciton luminescence formed due to the hot carrier transport in a locally photoexcited electron-hole bilayer
- Disorder and Interactions in Graphene and other Quantum Systems