This article is cited in 10 papers

XXIV International symposium Nanophysics and nanoelectronics, Nizhny Novgorod, march 10-13, 2020

Hydrodynamic terahertz plasmons and electron sound in graphene with spatial dispersion

D. V. Fateev^ab, V. V. Popov<sup>b

a</sup> Saratov State University
^b Saratov Branch, Kotel'nikov Institute of Radio-Engineering and Electronics, Russian Academy of Sciences

Abstract: The intrinsic transverse-magnetic modes of graphene with spatial dispersion are investigated theoretically in the hydrodynamic regime in a terahertz frequency range. It is revealed that spatial dispersion is caused by the diffusion electron-transport mechanism due to the spreading of electron-concentration gradients under the effect of pressure in an electron liquid. The cases of a screened and unscreened plasmon as well as electron sound are considered.

Keywords: plasmon, terahertz radiation, graphene, spatial dispersion, electron sound.

Received: 15.04.2020
Revised: 21.04.2020
Accepted: 21.04.2020

DOI: 10.21883/FTP.2020.08.49626.02

 English version: DOI: 10.1134/S1063782620080084

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