Mean-Field Theory for the Spin-Triplet Exciton Liquid in Quantum Wells

Details Mean-Field Theory for the Spin-Triplet Exciton Liquid in Quantum Wells Mean-Field Theory for the Spin-Triplet Exciton Liquid in Quantum Wells

1995-03-09

arxiv.org/abs/cond-mat/9503051v1

Physics

Condensed Matter

4 pages, REVTEX with psfig macros; 4 PostScript figures in uufiles format

Scientific paper

10.1016/0038-1098(95)00415-7

Using a mean-field theory, we study the possible existence of a spin-triplet intersubband exciton liquid ground state in semiconductor quantum well systems as a function of the electronic density and the strength of the intersubband Coulomb interaction matrix element at low temperatures. We find the excitonic phase to be stable over a large region of parameter space, and our calculated critical temperatures are attainable experimentally. In addition, we find that the transition to the excitonic phase can be either first- or second-order at zero temperature.

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