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Relaxation of Plasma Excitations in Two-Dimensional Electron Systems

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

An investigation is performed of the relaxation of plasma excitations in two-dimensional electron systems (2D-ESes) in GaAs/AlGaAs heterostructures. The effect radiational and incoherent collisional relaxation mechanisms have on the linewidth of cyclotron magnetoplasma resonance (CR) is studied. CR arises as a pure resonance that does not hybridize with dimensional magnetoplasma excitations. It is shown how magnetoplasma resonances form a CR’s fine structure due to the interaction between coherent radiative and incoherent collisional mechanisms of two-dimensional plasma relaxation. A comparative analysis is performed of the dependences of cyclotron and transport periods of relaxation on both the temperature and electron density of 2D-ESes. It is demonstrated that the period of cyclotron relaxation could exceed that of transport at low electron densities.

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Funding

This work was performed as part of a State Task for the Russian Academy of Sciences’ Institute of Solid State Physics.

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Correspondence to V. M. Muravev.

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Translated by L. Mosina

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Semenov, N.D., Andreev, I.V., Muravev, V.M. et al. Relaxation of Plasma Excitations in Two-Dimensional Electron Systems. Bull. Russ. Acad. Sci. Phys. 85, 118–122 (2021). https://doi.org/10.3103/S1062873821020234

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  • DOI: https://doi.org/10.3103/S1062873821020234

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