The excitonic superfluid liquid in the system of spatially separated electrons and holes

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Abstract
The properties of excitonic liquids in the system of spatially separated electrons (e) and holes (h) in coupled quantum wells (CQW) are considered. The energy of the ground state of the exciton liquid as a function of the density of electrons and holes at different separations D between e- and h- layers is obtained. The quantum transition gas- liquid when D decreases is studied. The temperatures of appearance of the superfluidity in the system (Kosterlitz-Thouless transition temperatures) have been estimated at different D. For the anisotropic 2D e-h system in CQW Mott metal-insulator quantum transition is studied.