Abstract
We study an electron‐hole system in double quantum wells theoretically using the Green’s function technique. We demonstrate that there is a temperature interval over which an abrupt jump in the value of the ionization degree occurs with an increase of the carrier density or temperature. The opposite effect — the collapse of the ionized electron‐hole plasma into an insulating exciton system — should occur at lower densities. In addition, we predict that under certain conditions there will be a sharp decrease of the ionization degree with increasing temperature — the anomalous Mott transition.
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