Numerical simulation of terahertz plasmons in gated graphene structures

Akira Satou, V. Ryzhii, F. T. Vasko, V. V. Mitin, Taiichi Otsuji

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Frequency dispersion and damping mechanisms of two-dimensional plasmons in graphene are studied by the numerical simulation based on the Boltzmann equation. The fundamental plasmon mode in a single-grating-gate structure is studied, and the gate-voltage tunability of its frequency as well as the coupling effect of plasmons in the gated and ungated regions are revealed. It is demonstrated that damping rates due to the acoustic-phonon scattering at room temperature and due to the short- and finite-range disorder scattering can be on the order of 1011 s-1, depending on the level of disorders. In addition, the damping due to the source and drain contacts is reported and its mechanism is discussed.

Original languageEnglish
Title of host publicationTerahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VI
DOIs
Publication statusPublished - 2013 Jun 10
Event2013 Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VI Conference - San Francisco, CA, United States
Duration: 2013 Feb 52013 Feb 7

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8624
ISSN (Print)0277-786X

Other

Other2013 Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VI Conference
CountryUnited States
CitySan Francisco, CA
Period13/2/513/2/7

Keywords

  • graphene
  • grating gates
  • plasmon
  • terahertz
  • weighted-essentially- nonoscillatory scheme

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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