Roton-maxon spectrum and instability for weakly interacting dipolar excitons in a semiconductor layer
arXiv:1403.3956 · doi:10.1103/PhysRevB.90.165430
Abstract
The formation of the roton-maxon excitation spectrum and the roton instability effect for a weakly correlated Bose gas of dipolar excitons in a semiconductor layer are predicted. The stability diagram is calculated. According to our numerical estimations, the threshold of the roton instability for Bose-Einstein condensed exciton gas with roton-maxon spectrum is achievable experimentally, e.g., in GaAs semiconductor layers.
arXiv comment9 pages, 3 figures; published version
References in corpus (70)
- Van der Waals heterostructures
- Many-Body Physics with Ultracold Gases
- Theory of Bose-Einstein condensation in trapped gases
- Bose-Einstein Condensation of Excitons in Bilayer Electron Systems
- Ground-State Properties of Magnetically Trapped Bose-Condensed Rubidium Gas
- Bose-Einstein condensation in trapped dipolar gases
- High-temperature superfluidity with indirect excitons in van der Waals heterostructures
- Roton-maxon spectrum and stability of trapped dipolar condensates
- Conserving and Gapless Approximations for an Inhomogeneous Bose Gas at Finite Temperatures
- Strongly correlated 2D quantum phases with cold polar molecules: controlling the shape of the interaction potential
- Stabilizing a purely dipolar quantum gas against collapse
- Spontaneous rotating vortex lattices in a pumped decaying condensate
- Room-Temperature Superfluidity in Graphene Bilayers
- Spontaneous Coherence in a Cold Exciton Gas
- Exciton condensation and charge fractionalization in a topological insulator film
- Quantum phase transition in a two-dimensional system of dipoles
- Exciton Condensation and Perfect Coulomb Drag
- High Temperature Superfluidity in Double Bilayer Graphene
- How to make a bilayer exciton condensate flow
- Analysis of the exciton-exciton interaction in semiconductor quantum wells
- Stability of quasi-two-dimensional Bose-Einstein condensates with dominant dipole-dipole interactions
- Exact hydrodynamics of a trapped dipolar Bose-Einstein condensate
- Bose-Einstein condensation in semiconductors: the key role of dark excitons
- Bogoliubov-Cerenkov radiation in a Bose-Einstein condensate flowing against an obstacle
- Evidence for a Bose-Einstein condensate of excitons
- Trapping of Cold Excitons with Laser Light
- Dipolar superfluidity in electron-hole bilayer systems
- Spin Texture in a Cold Exciton Gas
- Spin currents in a coherent exciton gas
- Cooper pairing of electrons and holes in graphene bilayer: Correlation effects
- Exciton Liquid in Coupled Quantum Wells
- Particle correlations and evidence for dark state condensation in a cold dipolar exciton fluid
- Effects of density imbalance on the BCS-BEC crossover in semiconductor electron-hole bilayers
- From spatially indirect to momentum-space indirect exciton by in-plane magnetic field
- Excitons and biexcitons in symmetric electron-hole bilayers
- Collection of indirect excitons in a diamond-shaped electrostatic trap
- Artificial trapping of a stable high-density dipolar exciton fluid
- Two-dimensional dipolar Bose gas with the roton-maxon excitation spectrum
- Excitonic Superfluidity and Screening in Electron-Hole Bilayer Systems
- Phase transitions of electron-hole and unbalanced electron systems in coupled quantum wells in high magnetic field
- Electron-hole pairing in topological insulator thin film
- Angular distribution of photoluminescence as a probe of Bose Condensation of trapped excitons
- Condensation of Excitons in Cu2O at Ultracold Temperatures: Experiment and Theory
- Dipolar Excitons, Spontaneous Phase Coherence, and Superfluid-Insulator Transition in Bi-layer Quantum Hall Systems at
- Coherence and Optical Emission from Bilayer Exciton Condensates
- Interplay of the exciton and electron-hole plasma recombination on the photoluminescence dynamics in bulk GaAs
- Quantum Hall Superfluids in Topological Insulator Thin Films
- Exciton supersolidity in hybrid Bose-Fermi systems
- Rotons in a hybrid Bose-Fermi system
- Effects of strong correlations for 2D Bose-Einstein condensed dipolar excitons
- "Gray" BCS condensate of excitons and internal Josephson effect
- Crystallization of an exciton superfluid
- Quantum phase transition and fractional excitations in a topological insulator thin film with Zeeman and excitonic masses
- Ultrarelativistic electron-hole pairing in graphene bilayer
- Mesoscopic supersolid of dipoles in a trap
- Ballistic spin transport in exciton gases
- Quasiequilibrium supersolid phase of a two-dimensional dipolar crystal
- Exciton spin noise in quantum wells
- Topological phases and fractional excitations of the exciton condensate in a special class of bilayer systems
- Nonlinear Optical Probe of Indirect Excitons
- Compensation of Dipolar-Exciton Spin Splitting in Magnetic Field
- Forming and confining of dipolar excitons by quantizing magnetic fields
- Two-Poton Correlations of Luminescence under Bose-Einstein Condensation of Dipolar Excitons
- Gauge-field rotation of 2D exciton Bose condensate in double quantum well by radial magnetic field
- Pseudo diamagnetism of four component exciton condensates
- Drag effect and Cooper electron-hole pair fluctuations in a topological insulator film
- Vortices in spinor cold exciton condensates with spin-orbit interaction
- Optical signatures of a fully dark exciton condensate
- Optical recombination of biexcitons in semiconductors
- Stationary waves in a superfluid exciton gas in quantum Hall bilayers
Cited by in corpus (14)
- Dipolar and spinor bosonic systems
- Equilibrium Phases of Tilted Dipolar Lattice Bosons
- Quantum phase transition of a two-dimensional quadrupolar system
- Thermodynamics of a two-dimensional dipolar Bose gas with correlated disorder in the roton regime
- Resonant Pairing of Excitons in Semiconductor Heterostructures
- Rotons in Optical Excitation Spectra of Monolayer Semiconductors
- Optical probing in a bilayer dark-bright condensate system
- Anisotropic superfluidity of two-dimensional excitons in a periodic potential
- Collective electronic excitation in a trapped ensemble of photogenerated dipolar excitons and free holes revealed by inelastic light scattering
- Ground state of an ultracold Fermi gas of tilted dipoles in elongated traps
- Tunable strongly interacting dipolar excitons in hybrid perovskites
- Density-wave-type supersolid of two-dimensional tilted dipolar bosons
- Classical crystal formation of dipoles in two dimensions
- Quantum Gases of Dipoles, Quadrupoles and Octupoles in Gross-Pitaevskii Formalism with Form Factor