Structure of exciton condensates in imbalanced electron-hole bilayers
arXiv:1611.09717 · doi:10.1103/PhysRevB.94.174519
Abstract
We investigate the possibility of excitonic superfluidity in electron-hole bilayers. We calculate the phase diagram of the system for the whole range of electron-hole density imbalance and for different degrees of electrostatic screening, using mean-field theory and a Ginzburg-Landau expansion. We are able to resolve differences on previous work in the literature which concentrated on restricted regions of the parameter space. We also give detailed descriptions of the pairing wavefunction in the Fulde-Ferrell-Larkin-Ovchinnikov paired state. The Ginzburg-Landau treatment allows us to investigate the energy scales involved in the pairing state and discuss the possible spontaneous breaking of two-dimensional translation symmetry in the ground state.
arXiv comment13 pages, 8 figures
References in corpus (18)
- Bose condensation of cavity polaritons beyond the linear regime: the thermal equilibrium of a model microcavity
- Stability Criteria for Breached Pair Superfluidity
- Excitonic condensation in a symmetric electron-hole bilayer
- Quantum liquid crystals in imbalanced Fermi gas: fluctuations and fractional vortices in Larkin-Ovchinnikov states
- Coulomb Drag in the Exciton Regime in Electron-Hole Bilayers
- Anomalous Coulomb drag in electron-hole bilayers
- Structure of the Fulde-Ferrell-Larkin-Ovchinnikov state in two-dimensional superconductors
- Effects of density imbalance on the BCS-BEC crossover in semiconductor electron-hole bilayers
- Density-induced BCS to Bose-Einstein crossover
- Excitonic Superfluidity and Screening in Electron-Hole Bilayer Systems
- Superfluidity at the BEC-BCS crossover in two-dimensional Fermi gases with population and mass imbalance
- BCS-BEC crossover with a finite-range interaction
- Polariton condensation and lasing in optical microcavities - the decoherence driven crossover
- Supersolidity in electron-hole bilayers with a large density imbalance
- Stability of Sarma phases in density imbalanced electron-hole bilayer systems
- Spinodal decomposition in polarised Fermi superfluids
- Transitions to the Fulde-Ferrell-Larkin-Ovchinnikov phases at low temperature in two dimensions
- Quantum condensation in electron-hole bilayers with density imbalance
Cited by in corpus (6)
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- Electrically Controlled Two-Dimensional Electron-Hole Fluids
- Extremely imbalanced two-dimensional electron-hole-photon systems
- Electrical Control of Two-Dimensional Electron-Hole Fluids in the Quantum Hall Regime
- Crescent states in charge-imbalanced polariton condensates
- Unconventional superconductivity mediated by exciton density wave fluctuations