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On the Bose–Einstein Condensate of Excitons in Crystals with Defects

  • SPECTROSCOPY AND PHYSICS OF ATOMS AND MOLECULES
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Abstract

The possibility of formation of a Bose–Einstein condensate (BEC) of excitons in a model nonideal lattice of a molecular crystal is considered. The spectrum of corresponding exciton excitations is analyzed. The dependence of the chemical potential on the concentration of structural defects is numerically simulated within the virtual crystal approximation, and particular features of the appearance of an exciton condensate in a nonideal system are studied based on this simulation. Conditions under which an BEC of light and dark excitons can appear are revealed.

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Funding

The studies in this work were performed within the framework of the state-funded project “Formation of the Structure and Properties of Promising Multifunctional Materials” at the Donetsk Institute for Physics and Engineering named after A.A. Galkin.

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Authors and Affiliations

  1. Donetsk Institute for Physics and Engineering Named after A.A. Galkin, 83114, Donetsk, Ukraine

    Yu. D. Zavorotnev, V. V. Rumyantsev & S. A. Fedorov

  2. Donetsk National University of Economics and Trade Named after Michael Tugan-Baranovsky, 83114, Donetsk, Ukraine

    E. Yu. Tomashevskaya

Authors
  1. Yu. D. Zavorotnev
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  2. V. V. Rumyantsev
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  3. S. A. Fedorov
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  4. E. Yu. Tomashevskaya
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Corresponding author

Correspondence to V. V. Rumyantsev.

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The authors declare that they have no conflict of interest.

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Translated by V. Rogovoi

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Zavorotnev, Y.D., Rumyantsev, V.V., Fedorov, S.A. et al. On the Bose–Einstein Condensate of Excitons in Crystals with Defects. Opt. Spectrosc. 128, 1537–1542 (2020). https://doi.org/10.1134/S0030400X20100276

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  • DOI: https://doi.org/10.1134/S0030400X20100276

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