Author:
Choksy D.J.,Szwed E.A.,Butov L.V.,Baldwin K.W.,Pfeiffer L.N.
Abstract
We studied the Fermi edge singularity due to Cooper-pair-like excitons at the Fermi energy in the photoluminescence spectra of neutral dense ultracold electron-hole plasma and a crossover from BEC to BCS-like exciton condensate with density.