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Hydrodynamic Terahertz Plasmons and Electron Sound in Graphene with Spatial Dispersion

  • XXIV INTERNATIONAL SYMPOSIUM “NANOPHYSICS AND NANOELECTRONICS”, NIZHNY NOVGOROD, MARCH 10–13, 2020
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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.

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Funding

This work was performed in the framework of the state task and supported in part by the Russian Foundation for Basic Research, project no. 18-37-20004, and “BAZIS” fund.

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Authors and Affiliations

  1. Kotelnikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, 410019, Saratov, Russia

    D. V. Fateev & V. V. Popov

  2. Saratov State University, 410012, Saratov, Russia

    D. V. Fateev

Authors
  1. D. V. Fateev
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  2. V. V. Popov
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Correspondence to D. V. Fateev.

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The authors declare that they have no conflict of interest.

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Translated by N. Korovin

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Fateev, D.V., Popov, V.V. Hydrodynamic Terahertz Plasmons and Electron Sound in Graphene with Spatial Dispersion. Semiconductors 54, 941–945 (2020). https://doi.org/10.1134/S1063782620080084

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  • DOI: https://doi.org/10.1134/S1063782620080084

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