Condensation of Excitons in Cu2O at Ultracold Temperatures: Experiment and Theory
arXiv:1206.7029 · doi:10.1088/1367-2630/14/10/105007
Abstract
We present experiments on the luminescence of excitons confined in a potential trap at milli-Kelvin bath temperatures under cw-excitation. They reveal several distinct features like a kink in the dependence of the total integrated luminescence intensity on excitation laser power and a bimodal distribution of the spatially resolved luminescence. Furthermore, we discuss the present state of the theoretical description of Bose-Einstein condensation of excitons with respect to signatures of a condensate in the luminescence. The comparison of the experimental data with theoretical results with respect to the spatially resolved as well as the integrated luminescence intensity shows the necessity of taking into account a Bose-Einstein condensed excitonic phase in order to understand the behaviour of the trapped excitons.
41 pages, 23 figures
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Cited by in corpus (20)
- Giant Rydberg Excitons in Cuprous Oxide
- CuO Microcrystals Grown on Silicon as Platform for Quantum-Degenerate Excitons and Rydberg States
- Rydberg excitons in the presence of an ultralow-density electron-hole plasma
- Exact-diagonalization study of exciton condensation in electron bilayers
- Optical Properties of Rydberg Excitons and Polaritons
- Dynamical instability of a driven-dissipative electron-hole condensate in the BCS-BEC-crossover region
- Hyperbolic Bloch equations: atom-cluster kinetics of an interacting Bose gas
- Non-equilibrium properties of a pumped-decaying Bose-condensed electron-hole gas in the BCS-BEC crossover region
- Roton-maxon spectrum and instability for weakly interacting dipolar excitons in a semiconductor layer
- Hetero pairing and component-dependent pseudogap phenomena in an ultracold Fermi gas with mass imbalance
- Electro-optical properties of CuO in the regime of Franz-Keldysh oscillations
- Waveguides for Rydberg excitons in CuO from strain traps
- Ground-state and spectral signatures of cavity exciton-polariton condensates
- Projector-based renormalization approach to electron-hole-photon systems in nonequlibrium steady-state
- Multicomponent exciton gas in cuprous oxide: cooling behaviour and the role of Auger decay
- Observation of ultra-high mobility excitons in a strain field by space- and time-resolved spectroscopy at sub-Kelvin temperatures
- Phase diagram of microcavity exciton-polariton condensates
- Collective two-boson decay of excitons in Bose-Einstein condensate and generation of coherent photon-phonon radiation
- Dielectric response of electron-hole systems. Nondegenerate case and quantum corrections
- BCS-BEC crossover of polaritonic condensates in mass-imbalanced semimetal/semiconductor microcavities