Excitons in two dimensions: the excitati
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Z.G. Koinov
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Article
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2000
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Elsevier Science
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English
β 85 KB
The Bethe-Salpeter equation for two-dimensional excitons is solved in the low-density limit. The analysis of the collective modes leads to a spectrum of the Bogolubov type. It was found that the critical temperature of the Kosterlitz-Thouless phase transition to exciton superfluidity scales linearly