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CONDENSED MATTER
Spatial spreading of the condensate of magnetoexcitons in a quantum Hall insulator
A. V. Gorbunov, A. V. Larionov, L. V. Kulik, V. B. Timofeev a Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, 142432 Russia
Abstract:
The spatial spreading of a dense ensemble of spin cyclotron magnetoexcitons in a quantum Hall insulator at the filling factor $\nu= 2$ is visualized using an optical system with a high aperture ratio. It is found that nondiffusive propagation over macroscopic distances is characteristic not only of excitons with a momentum on the order of the reciprocal magnetic length, which form a coherent condensate of magnetoexcitons, but also of excitons with very low momenta. The nondiffusive propagation of magnetoexciton condensates in real space is accompanied by a huge threshold increase in the amplitude of light reflection from excitations. The possible explanations of the observed behavior are discussed.
Received: 03.10.2022 Revised: 17.10.2022 Accepted: 18.10.2022
Citation:
A. V. Gorbunov, A. V. Larionov, L. V. Kulik, V. B. Timofeev, “Spatial spreading of the condensate of magnetoexcitons in a quantum Hall insulator”, Pis'ma v Zh. Èksper. Teoret. Fiz., 116:11 (2022), 756–762; JETP Letters, 116:11 (2022), 779–784
Linking options:
https://www.mathnet.ru/eng/jetpl6812 https://www.mathnet.ru/eng/jetpl/v116/i11/p756
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Abstract page: | 68 | References: | 19 | First page: | 9 |
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