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Exciton transport in Cu 2 O: Evidence for excitonic superfluidity?

1993; American Physical Society; Volume: 70; Issue: 25 Linguagem: Inglês

10.1103/physrevlett.70.3951

1092-0145

E. Fortin, S. Fafard, A. Mysyrowicz,

Cold Atom Physics and Bose-Einstein Condensates

A marked reduction in the velocity dispersion of excitons propagating through a thick ${\mathrm{Cu}}_{2}$O crystal at low temperatures and high densities is attributed to the onset of a superfluid excitonic phase.