Hydrodynamic electron transport and nonlinear waves in graphene

D. Svintsov, V. Vyurkov, V. Ryzhii, T. Otsuji

研究成果: Article

25 被引用数 (Scopus)

抄録

We derive the system of hydrodynamic equations governing the collective motion of massless fermions in graphene. The obtained equations demonstrate the lack of Galilean and Lorentz invariance and contain a variety of nonlinear terms due to the quasirelativistic nature of carriers. Using these equations, we show the possibility of soliton formation in an electron plasma of gated graphene. The quasirelativistic effects set an upper limit for soliton amplitude, which marks graphene out of conventional semiconductors. The mentioned noninvariance of the equations is revealed in spectra of plasma waves in the presence of steady flow, which no longer obey the Doppler shift. The feasibility of plasma-wave excitation by direct current in graphene channels is also discussed.

本文言語English
論文番号245444
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
88
24
DOI
出版ステータスPublished - 2013 12 27

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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