Abstract
The microwave absorption spectra of a two-dimensional electron system based on GaAs/AlGaAs heterostructures in a perpendicular magnetic field are experimentally investigated. A unique noninvasive technique for the excitation of “dark” axisymmetric plasma oscillations in single disks of two-dimensional electrons is developed. The excitation conditions and physical properties of the new dark plasma modes are studied in detail. The experimental results are in excellent agreement with theoretical calculations.
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Original Russian Text © A.A. Zagitova, V.M. Muravev, P.A. Gusikhin, A.A. Fortunatov, I.V. Kukushkin, 2018, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2018, Vol. 108, No. 7, pp. 478–482.
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Zagitova, A.A., Muravev, V.M., Gusikhin, P.A. et al. Observation of “Dark” Axisymmetric Plasma Modes in a Single Disk of Two-Dimensional Electrons. Jetp Lett. 108, 446–449 (2018). https://doi.org/10.1134/S0021364018190141
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DOI: https://doi.org/10.1134/S0021364018190141