Models of coherent exciton condensation

Details Models of coherent exciton condensation Models of coherent exciton condensation

2004-07-02

arxiv.org/abs/cond-mat/0407058v1

J. Phys.: Condens. Matter 16 (2004) S3597-S3620.

Physics

Condensed Matter

Strongly Correlated Electrons

27 pages, 6 figures. Submitted for a special issue of J. Phys. Cond. Matt. associated with the EU network "Photon-mediated phe

Scientific paper

10.1088/0953-8984/16/35/003

That excitons in solids might condense into a phase-coherent ground state was proposed about 40 years ago, and has been attracting experimental and theoretical attention ever since. Although experimental confirmation has been hard to come by, the concepts released by this phenomenon have been widely influential. This tutorial review discusses general aspects of the theory of exciton and polariton condensates, focussing on the reasons for coherence in the ground state wavefunction, the BCS to Bose crossover(s) for excitons and for polaritons, and the relationship of the coherent condensates to standard lasers.

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