Discovery of Two-Dimensional Electromagnetic Plasma Waves

We report the experimental discovery of "superluminal" electromagnetic 2D plasma waves in the electromagnetic response of a high-quality GaAs/AlGaAs two-dimensional electron system on a dielectric substrate. We measure the plasma wave spectrum on samples with different electron density. It...

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Veröffentlicht in:	Physical review letters 2021-04, Vol.126 (13), p.136801-136801, Article 136801
Hauptverfasser:	Shuvaev, A, Muravev, V M, Gusikhin, P A, Gospodarič, J, Pimenov, A, Kukushkin, I V
Format:	Artikel
Sprache:	eng
Schlagworte:	Circular polarization Electron density Magnetic resonance Plasma Plasma resonance Plasma waves Substrates Wave spectra
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container_end_page	136801
container_issue	13
container_start_page	136801
container_title	Physical review letters
container_volume	126
creator	Shuvaev, A Muravev, V M Gusikhin, P A Gospodarič, J Pimenov, A Kukushkin, I V
description	We report the experimental discovery of "superluminal" electromagnetic 2D plasma waves in the electromagnetic response of a high-quality GaAs/AlGaAs two-dimensional electron system on a dielectric substrate. We measure the plasma wave spectrum on samples with different electron density. It is established that, at large two-dimensional densities, there is a strong hybridization between the plasma and the Fabry-Perot light modes. In the presence of a perpendicular magnetic field, the plasma resonance is shown to split into two modes, each corresponding to a particular sense of circular polarization. Experimental results are found to be in good agreement with the theory.
doi_str_mv	10.1103/PhysRevLett.126.136801
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subjects	Circular polarization Electron density Magnetic resonance Plasma Plasma resonance Plasma waves Substrates Wave spectra
title	Discovery of Two-Dimensional Electromagnetic Plasma Waves
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