Research paperTheoreticalA Pair of 2D Quantum Liquids: Investigating the Phase Behavior of Indirect ExcitonsPaul R. Wrona, Eran Rabani, Phillip L. GeisslerarXiv preprint·2022·10.1021/acsnano.2c06947·arXiv:2207.05120AbstractLong-lived indirect excitons (IXs) exhibit a rich phase diagram, including a Bose-Einstein condensate (BEC), a Wigner crystal, and other exotic phases. Recent experiments have hinted at a “classical” liquid of IXs above the BEC transition. To uncover the nature of this phase, we use a broad range of theoretical tools and find no evidence of a driving force towards classical condensation. Instead, we attribute the condensed phase to a quantum electron-hole liquid (EHL), first proposed by Keldysh for direct excitons. Taking into account the association of free carriers into bound excitons, we study the phase equilibrium between a gas of excitons, a gas of free carriers, and an EHL for a wide range of electron-hole separations, temperatures, densities, and mass ratios. Our results agree reasonably well with recent measurements of GaAs/AlGaAs coupled quantum wells.Read more
Model GaAs/Al0.28Ga0.72As coupled quantum well indirect-exciton system used to study exciton-exciton interactions and electron-hole liquid stability.1 propertySimulatedGaAsStudied MaterialAl0.28Ga0.72AsStudied Materialindirect excitonStudied MaterialExpand
Generic indirect-exciton gas used as the thermodynamic phase component in the exciton-gas / electron-hole-liquid equilibrium analysis.2 propertiesSimulatedindirect excitonStudied MaterialExpand
Research paperTheoreticalA Pair of 2D Quantum Liquids: Investigating the Phase Behavior of Indirect ExcitonsPaul R. Wrona, Eran Rabani, Phillip L. GeisslerarXiv preprint·2022·10.1021/acsnano.2c06947·arXiv:2207.05120AbstractLong-lived indirect excitons (IXs) exhibit a rich phase diagram, including a Bose-Einstein condensate (BEC), a Wigner crystal, and other exotic phases. Recent experiments have hinted at a “classical” liquid of IXs above the BEC transition. To uncover the nature of this phase, we use a broad range of theoretical tools and find no evidence of a driving force towards classical condensation. Instead, we attribute the condensed phase to a quantum electron-hole liquid (EHL), first proposed by Keldysh for direct excitons. Taking into account the association of free carriers into bound excitons, we study the phase equilibrium between a gas of excitons, a gas of free carriers, and an EHL for a wide range of electron-hole separations, temperatures, densities, and mass ratios. Our results agree reasonably well with recent measurements of GaAs/AlGaAs coupled quantum wells.Read more
Model GaAs/Al0.28Ga0.72As coupled quantum well indirect-exciton system used to study exciton-exciton interactions and electron-hole liquid stability.1 propertySimulatedGaAsStudied MaterialAl0.28Ga0.72AsStudied Materialindirect excitonStudied MaterialExpand
Generic indirect-exciton gas used as the thermodynamic phase component in the exciton-gas / electron-hole-liquid equilibrium analysis.2 propertiesSimulatedindirect excitonStudied MaterialExpand
Research paperTheoreticalA Pair of 2D Quantum Liquids: Investigating the Phase Behavior of Indirect ExcitonsPaul R. Wrona, Eran Rabani, Phillip L. GeisslerarXiv preprint·2022·10.1021/acsnano.2c06947·arXiv:2207.05120AbstractLong-lived indirect excitons (IXs) exhibit a rich phase diagram, including a Bose-Einstein condensate (BEC), a Wigner crystal, and other exotic phases. Recent experiments have hinted at a “classical” liquid of IXs above the BEC transition. To uncover the nature of this phase, we use a broad range of theoretical tools and find no evidence of a driving force towards classical condensation. Instead, we attribute the condensed phase to a quantum electron-hole liquid (EHL), first proposed by Keldysh for direct excitons. Taking into account the association of free carriers into bound excitons, we study the phase equilibrium between a gas of excitons, a gas of free carriers, and an EHL for a wide range of electron-hole separations, temperatures, densities, and mass ratios. Our results agree reasonably well with recent measurements of GaAs/AlGaAs coupled quantum wells.Read more
Model GaAs/Al0.28Ga0.72As coupled quantum well indirect-exciton system used to study exciton-exciton interactions and electron-hole liquid stability.1 propertySimulatedGaAsStudied MaterialAl0.28Ga0.72AsStudied Materialindirect excitonStudied MaterialExpand
Generic indirect-exciton gas used as the thermodynamic phase component in the exciton-gas / electron-hole-liquid equilibrium analysis.2 propertiesSimulatedindirect excitonStudied MaterialExpand
Research paperTheoreticalA Pair of 2D Quantum Liquids: Investigating the Phase Behavior of Indirect ExcitonsPaul R. Wrona, Eran Rabani, Phillip L. GeisslerarXiv preprint·2022·10.1021/acsnano.2c06947·arXiv:2207.05120AbstractLong-lived indirect excitons (IXs) exhibit a rich phase diagram, including a Bose-Einstein condensate (BEC), a Wigner crystal, and other exotic phases. Recent experiments have hinted at a “classical” liquid of IXs above the BEC transition. To uncover the nature of this phase, we use a broad range of theoretical tools and find no evidence of a driving force towards classical condensation. Instead, we attribute the condensed phase to a quantum electron-hole liquid (EHL), first proposed by Keldysh for direct excitons. Taking into account the association of free carriers into bound excitons, we study the phase equilibrium between a gas of excitons, a gas of free carriers, and an EHL for a wide range of electron-hole separations, temperatures, densities, and mass ratios. Our results agree reasonably well with recent measurements of GaAs/AlGaAs coupled quantum wells.Read more
Model GaAs/Al0.28Ga0.72As coupled quantum well indirect-exciton system used to study exciton-exciton interactions and electron-hole liquid stability.1 propertySimulatedGaAsStudied MaterialAl0.28Ga0.72AsStudied Materialindirect excitonStudied MaterialExpand
Generic indirect-exciton gas used as the thermodynamic phase component in the exciton-gas / electron-hole-liquid equilibrium analysis.2 propertiesSimulatedindirect excitonStudied MaterialExpand
