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Measurement of exciton correlations using electrostatic lattices

  • Author(s): Remeika, M;
  • Leonard, JR;
  • Dorow, CJ;
  • Fogler, MM;
  • Butov, LV;
  • Hanson, M;
  • Gossard, AC
  • et al.
Abstract

We present a method for determining correlations in a gas of indirect excitons in a semiconductor quantum well structure. The method involves subjecting the excitons to a periodic electrostatic potential that causes modulations of the exciton density and photoluminescence (PL). Experimentally measured amplitudes of energy and intensity modulations of exciton PL serve as an input to a theoretical estimate of the exciton correlation parameter and temperature. We also present a proof-of-principle demonstration of the method for determining the correlation parameter and discuss how its accuracy can be improved.

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