Abstract:We present a general theory of drag on a condensate due to interactions with a moving thermal bath of non-condensate particles, adapted from previous theory of equilibration of a condensate in a trap. This theory can be used to model the polariton drag effect observed previously, in which an electric current passing through a polariton condensate gives a measurable momentum transfer to the condensate, and an effective potential energy shift.Polaritons inherently have a finite lifetime ∼ 20 − 200 ps inside a mi… Show more
“…Formation of polaritons in semiconductor quantum wells and two-dimensional transition metal dichalcogenides embedded into optical microcavities [32] allows to enhance tunability of the Bose-Fermi systems, to increase the critical temperature of Bose-Einstein condensation (BEC) and to employ polaronic effects. For instance, drag between Bose-condensed polaritons and electrons in normal state, both located in the same layer, was observed [33] and theoretically explained [34].…”
The Andreev-Bashkin effect, or superfluid drag, is predicted in a system of Bose-condensed excitonic polaritons in optical microcavity coupled by electron-exciton interaction with a superconducting layer. Two possible setups with spatially indirect dipole excitons or direct excitons are considered. The drag density characterizing a magnitude of this effect is found by many-body calculations with taking into account dynamical screening of electron-exciton interaction. For the superconducting electronic layer, we assume the recently proposed polaritonic mechanism of Cooper pairing, although the preexisting thin-film superconductor should also demonstrate the effect. According to our calculations, the drag density can reach considerable values in realistic conditions, with excitonic and electronic layers made from GaAs-based quantum wells or two-dimensional transition metal dichalcogenides. The predicted nondissipative drag could be strong enough to be observable as induction of a supercurrent in the electronic layer by a flow of polariton Bose condensate.
“…Formation of polaritons in semiconductor quantum wells and two-dimensional transition metal dichalcogenides embedded into optical microcavities [32] allows to enhance tunability of the Bose-Fermi systems, to increase the critical temperature of Bose-Einstein condensation (BEC) and to employ polaronic effects. For instance, drag between Bose-condensed polaritons and electrons in normal state, both located in the same layer, was observed [33] and theoretically explained [34].…”
The Andreev-Bashkin effect, or superfluid drag, is predicted in a system of Bose-condensed excitonic polaritons in optical microcavity coupled by electron-exciton interaction with a superconducting layer. Two possible setups with spatially indirect dipole excitons or direct excitons are considered. The drag density characterizing a magnitude of this effect is found by many-body calculations with taking into account dynamical screening of electron-exciton interaction. For the superconducting electronic layer, we assume the recently proposed polaritonic mechanism of Cooper pairing, although the preexisting thin-film superconductor should also demonstrate the effect. According to our calculations, the drag density can reach considerable values in realistic conditions, with excitonic and electronic layers made from GaAs-based quantum wells or two-dimensional transition metal dichalcogenides. The predicted nondissipative drag could be strong enough to be observable as induction of a supercurrent in the electronic layer by a flow of polariton Bose condensate.
“…Fig. 8 shows the comparison of the leading-order condensate contribution F p (16) to the rectification function with the subleading noncondensate one F p (34). Since the main contribution to the integral in Eq.…”
Section: B Temperature Dependence Of Rectification Function Of Superc...mentioning
confidence: 99%
“…Formation of polaritons in semiconductor quantum wells and two-dimensional transition metal dichalcogenides embedded into optical microcavities [32] allows to enhance tunability of the Bose-Fermi systems, to increase the critical temperature of Bose-Einstein condensation (BEC) and to employ polaronic effects. For instance, drag between Bose-condensed polaritons and electrons in normal state, both located in the same layer, was observed [33] and theoretically explained [34]. dimensional electron gas (2DEG) undergo Cooper pairing due to exchange of virtual Bogoliubov excitations in BEC of excitonic polaritons.…”
The Andreev-Bashkin effect, or superfluid drag, is predicted in a system of Bosecondensed excitonic polaritons in optical microcavity coupled by electron-exciton interaction with a superconducting layer. Two possible setups with spatially indirect dipole excitons or direct excitons are considered. The drag density characterizing a magnitude of this effect is found by many-body calculations with taking into account dynamical screening of electron-exciton interaction. For the superconducting electronic layer, we assume the recently proposed polaritonic mechanism of Cooper pairing, although the preexisting thin-film superconductor should also demonstrate the effect. According to our calculations, the drag density can reach considerable values in realistic conditions, with excitonic and electronic layers made from GaAs-based quantum wells or two-dimensional transition metal dichalcogenides. The predicted nondissipative drag could be strong enough to be observable as induction of a supercurrent in the electronic layer by a superfluid flow of polaritons.Recently the novel mechanism of superconductivity has been proposed [35][36][37][38][39][40][41][42][43], when electrons in a two-1
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