Detecting an exciton crystal by statistical means

Abstract

We investigate an ensemble of excitons in a coupled quantum well excited via an applied laser field. Using an effective disordered quantum Ising model, we perform a numerical simulation of the experimental procedure and calculate the probability distribution function $P(M)$ to create $M$ excitons as well as their correlation function. It shows clear evidence of the existence of two phases corresponding to a liquid and a crystal phase. We demonstrate that not only the correlation function but also the distribution $P(M)$ is very well suited to monitor this transition.

5 pages, 5 figures

References in corpus (7)

• Quantum phase transition in a two-dimensional system of dipoles
• Analysis of the exciton-exciton interaction in semiconductor quantum wells
• Pattern formation of indirect excitons in coupled quantum wells
• Rydberg crystallization detection by statistical means
• Excitation Energy Dependence of the Exciton Inner Ring
• Nanotransformation and current fluctuations in exciton condensate junctions
• Observation of macroscopic coherence in self-organized dipolar excitons