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Fizika i Tekhnika Poluprovodnikov, 2021, Volume 55, Issue 8, Pages 649–653
DOI: https://doi.org/10.21883/FTP.2021.08.51130.06 (Mi phts4995) 		 
This article is cited in 2 scientific papers (total in 2 papers)

XXV International Symposium "Nanophysics and Nanoelectronics", Nizhny Novgorod, March 9-12, 2021

Amplification of terahertz electromagnetic waves in a structure with two graphene layers under a direct electric current flow: a hydrodynamic approximation

I. M. Moiseenkoa, V. V. Popova, D. V. Fateevab

a Saratov Branch, Kotel'nikov Institute of Radio-Engineering and Electronics, Russian Academy of Sciences
b Saratov State University
Full-text PDF (305 kB) Citations (2)
DOI: https://doi.org/10.21883/FTP.2021.08.51130.06
Abstract: The amplification of terahertz electromagnetic radiation in a structure with two layers of graphene through which a direct electric current flows is studied theoretically. The hydrodynamic conductivity of graphene is investigated. It is shown that the real part of the graphene conductivity can be negative in the terahertz-frequency range at the drift velocities of charge carriers in graphene that are lower than the phase velocity of an electromagnetic wave. For small wave vectors of a terahertz wave that is incident on a graphene structure, the spatial dispersion insignificantly contributes to the hydrodynamic conductivity of graphene. Due to this, the amplification efficiency does not depend on the direction of currents in each of the graphene layers. It is shown that graphene with a direct electric current can be used to create terahertz amplifiers operating at room temperature.
Keywords: graphene, amplification of terahertz radiation, graphene with a direct current.
Funding agency Grant number
Ministry of Education and Science of the Russian Federation
This study was supported by a grant of the President of the Russian Federation for young scientists and post-graduate students engaged in promising research and development works in priority fields of modernizing the Russian economy.
Received: 09.04.2021
Revised: 19.04.2021
Accepted: 19.04.2021
English version:
Semiconductors, 2021, Volume 55, Pages s30–s34
DOI: https://doi.org/10.1134/S1063782621080133
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: I. M. Moiseenko, V. V. Popov, D. V. Fateev, “Amplification of terahertz electromagnetic waves in a structure with two graphene layers under a direct electric current flow: a hydrodynamic approximation”, Fizika i Tekhnika Poluprovodnikov, 55:8 (2021), 649–653; Semiconductors, 55 (2021), s30–s34
Citation in format AMSBIB
\Bibitem{MoiPopFat21}
\by I.~M.~Moiseenko, V.~V.~Popov, D.~V.~Fateev
\paper Amplification of terahertz electromagnetic waves in a structure with two graphene layers under a direct electric current flow: a hydrodynamic approximation
\jour Fizika i Tekhnika Poluprovodnikov
\yr 2021
\vol 55
\issue 8
\pages 649--653
\mathnet{http://mi.mathnet.ru/phts4995}
\crossref{https://doi.org/10.21883/FTP.2021.08.51130.06}
\elib{https://elibrary.ru/item.asp?id=46480616}
\transl
\jour Semiconductors
\yr 2021
\vol 55
\pages s30--s34
\crossref{https://doi.org/10.1134/S1063782621080133}
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  • https://www.mathnet.ru/eng/phts/v55/i8/p649
    • This publication is cited in the following 2 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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    		Fizika i Tekhnika Poluprovodnikov Fizika i Tekhnika Poluprovodnikov
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