Phase transitions of electron-hole and unbalanced electron systems in coupled quantum wells in high magnetic field
Yu. E. Lozovik, O. L. Berman, V. G. Tsvetus
Abstract
Superfluidity of spatially separated electrons and holes and unbalanced two-layer electron system in high magnetic field is considered. The temperature of the Kosterlitz-Thouless transition to a superfluid state is obtained as a function of magnetic field and interlayer separation. The equation of state for magnetoexciton system in quasi-classical regime is analyzed. The transition from excitonic phase to electron-hole phase is considered. Possible experimental manifestations of the predicted effects are briefly discussed.
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