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Statistical mechanics of screened spatially indirect excitons

V. V. Nikolaev·M. E. Portnoi
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Abstract

We study thermodynamic properties of spatially separated electron-hole plasma in double-layered systems using Green function formalism. The screening of the Coulomb interaction is considered in the framework of Thomas-Fermi approximation, and a qualitatively new mechanism of screening by indirect excitons is taken into account. The exciton density is shown to decrease sharply with increasing electron-hole separation up to one exciton Born radius. The strong mutual enhancement of screening and charge-separation effects is found.

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V. V. Nikolaev, M. E. Portnoi. 2001-11-20. Statistical mechanics of screened spatially indirect excitons. https://doi.org/10.1002/1521-396x(200204)190%3A3%3C655%3A%3Aaid-pssa655%3E3.0.co%3B2-7

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