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.
@article{arxiv.1508.04407,
title = {Measurement of exciton correlations using electrostatic lattices},
author = {M. Remeika and J. R. Leonard and C. J. Dorow and M. M. Fogler and L. V. Butov and M. Hanson and A. C. Gossard},
journal= {arXiv preprint arXiv:1508.04407},
year = {2016}
}