Reference : Detecting an exciton crystal by statistical means
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Detecting an exciton crystal by statistical means
Breyel, D. [> >]
Soller, H. [> >]
Schmidt, Thomas mailto [University of Basel > Department of Physics]
Komnik, A. [> >]
Physica B
Yes (verified by ORBilu)
[en] Exact diagonalization ; Exciton ; Laser ; Wigner crystal
[en] 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.

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