Extremely imbalanced two-dimensional electron-hole-photon systems
arXiv:1911.08808 · doi:10.1103/PhysRevResearch.2.023089
Abstract
We investigate the phases of two-dimensional electron-hole systems strongly coupled to a microcavity photon field in the limit of extreme charge imbalance. Using variational wave functions, we examine the competition between different electron-hole paired states for the specific cases of semiconducting III-V single quantum wells, electron-hole bilayers, and transition metal dichalcogenide monolayers embedded in a planar microcavity. We show how the Fermi sea of excess charges modifies both the electron-hole bound state (exciton) properties and the dielectric constant of the cavity active medium, which in turn affects the photon component of the many-body polariton ground state. On the one hand, long-range Coulomb interactions and Pauli blocking of the Fermi sea promote electron-hole pairing with finite center-of-mass momentum, corresponding to an excitonic roton minimum. On the other hand, the strong coupling to the ultra-low-mass cavity photon mode favors zero-momentum pairs. We discuss the prospect of observing different types of electron-hole pairing in the photon spectrum.
arXiv comment18 pages, 14 figures
References in corpus (30)
- Observation of giant bandgap renormalization and excitonic effects in a monolayer transition metal dichalcogenide semiconductor
- Strong light-matter coupling in two-dimensional atomic crystals
- Computational 2D Materials Database: Electronic Structure of Transition-Metal Dichalcogenides and Oxides
- Theory of Neutral and Charged Excitons in Monolayer Transition Metal Dichalcogenides
- Inhomogeneous Superconductivity in Condensed Matter and QCD
- Fermi polaron-polaritons in charge-tunable atomically thin semiconductors
- Fulde-Ferrell-Larkin-Ovchinnikov Superconducting State in CeCoIn5
- Evidence of high-temperature exciton condensation in 2D atomic double layers
- Spin-Imbalance in a One-Dimensional Fermi Gas
- Exciton-polaritons in van der Waals heterostructures embedded in tunable microcavities
- Two-dimensional semiconductors in the regime of strong light-matter coupling
- Many-Body Theory of Trion Absorption Features in Two-Dimensional Semiconductors
- Calorimetric Evidence for a Fulde-Ferrell-Larkin-Ovchinnikov Superconducting State in the Layered Organic Superconductor κ_2_2$
- Valley-Polarized Exciton-Polaritons in a Monolayer Semiconductor
- Imbalanced Feshbach-resonant Fermi gases
- Coulomb Drag in the Exciton Regime in Electron-Hole Bilayers
- The Coulomb interaction in monolayer transition-metal dichalcogenides
- Exciton band structure in two-dimensional materials
- The Fulde-Ferrell-Larkin-Ovchinnikov state for ultracold fermions in lattice and harmonic potentials: a review
- Anomalous Coulomb drag in electron-hole bilayers
- Giant paramagnetism induced valley polarization of electrons in charge-tunable monolayer MoSe2
- Thermodynamic evidence for the Fulde-Ferrell-Larkin-Ovchinnikov state in the KFe2As2 superconductor
- Microscopic study of the Fulde-Ferrell-Larkin-Ovchinnikov state in an all-organic superconductor
- Observation of bosonic condensation in a hybrid monolayer MoSe2-GaAs microcavity
- Experimental verification of the very strong coupling regime in a GaAs quantum well microcavity
- Microscopic description of exciton-polaritons in microcavities
- Supersolidity in electron-hole bilayers with a large density imbalance
- Fermi-edge exciton-polaritons in doped semiconductor microcavities with finite hole mass
- Stability of Sarma phases in density imbalanced electron-hole bilayer systems
- Structure of exciton condensates in imbalanced electron-hole bilayers
Cited by in corpus (8)
- Theory of exciton-electron scattering in atomically thin semiconductors
- Electrically Controlled Two-Dimensional Electron-Hole Fluids
- Shear Viscosity in Two-Dimensional Dipole Systems
- Crescent states in charge-imbalanced polariton condensates
- Multiple polaron quasiparticles with dipolar fermions in a bilayer geometry
- Quasi-equilibrium polariton condensates in the non-linear regime and beyond
- Quantum coherent states of mass-imbalanced electron-hole system within optical microcavities
- BCS-BEC crossover of polaritonic condensates in mass-imbalanced semimetal/semiconductor microcavities