Hydrodynamic Terahertz Plasmons and Electron Sound in Graphene with Spatial Dispersion

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-concen...

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Bibliographic Details
Published in:Semiconductors (Woodbury, N.Y.) N.Y.), 2020-08, Vol.54 (8), p.941-945
Main Authors: Fateev, D. V., Popov, V. V.
Format: Article
Language:English
Subjects:
2020
Concentration gradient
Dispersion
Electron transport
Frequency ranges
Graphene
Graphite
Magnetic Materials
Magnetism
March 10–13
Nizhny Novgorod
Physics
Physics and Astronomy
Plasmons
Pressure effects
Terahertz frequencies
Xxiv International Symposium “Nanophysics and Nanoelectronics”
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Summary: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.
ISSN:1063-7826
1090-6479
DOI:10.1134/S1063782620080084