Room-temperature superfluidity in a polariton condensate

@article{Lerario2017RoomtemperatureSI,
  title={Room-temperature superfluidity in a polariton condensate},
  author={Giovanni Lerario and Antonio Fieramosca and F'abio Barachati and Dario Ballarini and Konstantinos S. Daskalakis and Lorenzo Dominici and Milena De Giorgi and Stefan A. Maier and Giuseppe Gigli and St'ephane K'ena-Cohen and Daniele Sanvitto},
  journal={Nature Physics},
  year={2017},
  volume={13},
  pages={837-841}
}
Superfluidity is a phenomenon usually restricted to cryogenic temperatures, but organic microcavities provide the conditions for a superfluid flow of polaritons at room temperature. Superfluidity—the suppression of scattering in a quantum fluid at velocities below a critical value—is one of the most striking manifestations of the collective behaviour typical of Bose–Einstein condensates1. This phenomenon, akin to superconductivity in metals, has until now been observed only at prohibitively low… 
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