Acousto-exciton interaction in a gas of 2D indirect dipolar excitons in the presence of disorder
- Авторы: Kovalev V.M.1,2, Chaplik A.V.1,3
-
Учреждения:
- Rzhanov Institute of Semiconductor Physics, Siberian Branch
- Novosibirsk State Technical University
- Novosibirsk State University
- Выпуск: Том 122, № 3 (2016)
- Страницы: 499-508
- Раздел: Special issue in honor of L.V. Keldysh’s 85th birthday Issue Editor: S. Tikhodeev
- URL: https://journals.rcsi.science/1063-7761/article/view/189927
- DOI: https://doi.org/10.1134/S1063776116030158
- ID: 189927
Цитировать
Аннотация
A theory for the linear and quadratic responses of a 2D gas of indirect dipolar excitons to an external surface acoustic wave perturbation in the presence of a static random potential is considered. The theory is constructed both for high temperatures, definitely greater than the exciton gas condensation temperature, and at zero temperature by taking into account the Bose–Einstein condensation effects. The particle Green functions, the density–density correlation function, and the quadratic response function are calculated by the “cross” diagram technique. The results obtained are used to calculate the absorption of Rayleigh surface waves and the acoustic exciton gas drag by a Rayleigh wave. The damping of Bogoliubov excitations in an exciton condensate due to theirs scattering by a random potential has also been determined.
Ключевые слова
Об авторах
V. Kovalev
Rzhanov Institute of Semiconductor Physics, Siberian Branch; Novosibirsk State Technical University
Email: chaplik@isp.nsc.ru
Россия, Novosibirsk, 630090; pr. K. Marksa 20, Novosibirsk, 630073
A. Chaplik
Rzhanov Institute of Semiconductor Physics, Siberian Branch; Novosibirsk State University
Автор, ответственный за переписку.
Email: chaplik@isp.nsc.ru
Россия, Novosibirsk, 630090; ul. Pirogova 2, Novosibirsk, 630090
Дополнительные файлы
