Crescent states in charge-imbalanced polariton condensates
arXiv:2001.07726 · doi:10.1103/PhysRevLett.125.067405
Abstract
We study two-dimensional charge-imbalanced electron-hole systems embedded in an optical microcavity. We find that strong coupling to photons favors states with pairing at zero or small center of mass momentum, leading to a condensed state with spontaneously broken time-reversal and rotational symmetry, and unpaired carriers that occupy an anisotropic crescent-shaped sliver of momentum space. The crescent state is favoured at moderate charge imbalance, while a Fulde--Ferrel--Larkin--Ovchinnikov-like state --- with pairing at large center of mass momentum --- occurs instead at strong imbalance. The crescent state stability results from long-range Coulomb interactions in combination with extremely long-range photon-mediated interactions.
arXiv comment6 pages, 4 figures, plus supplemental material
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Cited by in corpus (6)
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- Light-induced topological superconductivity in transition metal dichalcogenide monolayers
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