Measurement of exciton correlations using electrostatic lattices
M. Remeika, J.R. Leonard, C.J. Dorow, M.M. Fogler, L.V. Butov, M., Hanson, and A.C. Gossard
TL;DR
This paper introduces a novel method to measure exciton correlations in semiconductor quantum wells by applying electrostatic lattices and analyzing photoluminescence modulations, providing a new tool for exciton many-body physics.
Contribution
The paper develops and demonstrates a new experimental approach to quantify exciton correlations using electrostatic lattices and PL modulation analysis, advancing the study of exciton interactions.
Findings
Successful measurement of exciton correlation parameters
Demonstration of electrostatic lattice modulation effects
Discussion on improving measurement accuracy
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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