Nonclassical effects that signal condensation of indirect excitons in CQW
AlAsGaAs-small
  • Strong enhancement of the exciton radiative decay rate consistent with exciton condensate superradiance (macroscopic dipole)
  • Strong enhancement of the exciton mobility consistent with the onset of exciton superfluidity
  • Huge fluctuations of the exciton emission consistent with critical fluctuations near the phase transition

L.V. Butov, A. Zrenner, G. Bohm, G. Weimann, Condensation of indirect excitons in coupled AlAs/GaAs quantum wells, J. de Physique 3, 167 (1993).

L.V. Butov, A. Zrenner, G. Abstreiter, G. Bohm, G. Weimann, Condensation of indirect excitons in coupled AlAs/GaAs quantum wells, Phys. Rev. Lett. 73, 304 (1994).

L.V. Butov and A.I. Filin, Anomalous transport and luminescence of indirect excitons in AlAs/GaAs coupled quantum wells as evidence for exciton condensation, Phys. Rev. B 58, 1980 (1998).