Excitonic condensation in quasi-two-dimensional systems

M. Crisan; I. Tifrea

doi:10.1016/j.physleta.2005.07.091

paper

Excitonic condensation in quasi-two-dimensional systems

arXiv:cond-mat/0511593 · doi:10.1016/j.physleta.2005.07.091

Abstract

We present a low energy model for the Bose-Einstein condensation in a quasi-two-dimensional excitonic gas. Using the flow equations of the Renormalization group and a $Φ^{4}$ model with the dynamical critical exponent $z = 2$ we calculate the temperature dependence of the critical density, coherence length, magnetic susceptibility, and specific heat. The model can be relevant for the macroscopic coherence observed in GaAs/AlGaAs coupled quantum wells.

4 Revtex pages