Excitonic condensation in quasi-two-dimensional systems

Details Excitonic condensation in quasi-two-dimensional systems Excitonic condensation in quasi-two-dimensional systems

2005-11-24

arxiv.org/abs/cond-mat/0511593v1

Physics Letters A 346, 310 (2005)

Physics

Condensed Matter

Materials Science

4 Revtex pages

Scientific paper

10.1016/j.physleta.2005.07.091

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 $\Phi^4$ 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.

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