Publication:
Photonic engineering providing conditions for direct exciton macroscopic coherence at elevated temperatures

Дата
2019
Авторы
Kurbakov, I. L.
Lozovik, Y. E.
Voronova, N. S.
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Научные группы
Организационные подразделения
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Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
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Аннотация
© 2019 SPIE. The possibility to observe a macroscopically coherent state in a gas of two-dimensional direct excitons at temperatures up to tens of Kelvin is described. The dramatic increase of the exciton lifetime allowing effective thermalization is predicted for the o-resonant cavities that strongly suppress exciton recombination. The material systems considered are single GaAs quantum wells of different thicknesses and a transition metal dichalcogenide monolayer, embedded in a layered medium with subwavelength period. The quantum hydrodynamic approach combined with the Bogoliubov description yield the one-body density matrix of the system. Employing the Kosterlitz-Thouless "dielectric screening" problem to account for vortices, we obtain the superfluid and the condensate densities and the critical temperature of the Berezinskii-Kosterlitz-Thouless crossover, for all geometries in consideration. Experimentally observable many fold increase of the photoluminescence intensity from the structure as it is cooled below the critical temperature is predicted.
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Kurbakov, I. L. Photonic engineering providing conditions for direct exciton macroscopic coherence at elevated temperatures / Kurbakov, I.L., Lozovik, Y.E., Voronova, N.S. // Proceedings of SPIE - The International Society for Optical Engineering. - 2019. - 10912. - 10.1117/12.2509770
URI
https://www.doi.org/10.1117/12.2509770
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85065763850&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000468820500001
 https://openrepository.mephi.ru/handle/123456789/18063
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