Low-temperature kinetics of 2D exciton gas cooling in quantum well bilayer

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Low temperature kinetics of 2 D exciton gas cooling in quantum well bilayer

We study the kinetics of 2D Bose gas cooling provided Bose particles interact with 3D phonons. At low temperatures phonon emission is prohibited by the energy and the momentum conservation. We show that both particle-particle scattering and impurity scattering assist the Bose gas cooling. The temporal relaxation of temperature follows the law T ∼ 1/ √ t above the Berezinski-Kosterlitz-Thouless ...

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The condensation of excitons, bound electron-hole pairs in a solid, into a coherent collective electronic state was predicted over 50 years ago. Perhaps surprisingly, the phenomenon was first observed in a system consisting of two closely-spaced parallel two-dimensional electron gases in a semiconductor double quantum well. At an appropriate high magnetic field and low temperature, the bilayer ...

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ژورنال

عنوان ژورنال: Journal of Experimental and Theoretical Physics Letters

سال: 2001

ISSN: 0021-3640,1090-6487

DOI: 10.1134/1.1385662