Graphene nanoelectromechanical resonators for the detection of modulated terahertz radiation

D. Svintsov, V. G. Leiman, V. Ryzhii, T. Otsuji, M. S. Shur

研究成果: Article

7 引用 (Scopus)

抜粋

We propose and analyze a detector of modulated terahertz (THz) radiation based on the graphene field-effect transistor with a mechanically floating gate also made of graphene. The THz component of incoming radiation induces resonant excitation of plasma oscillations in the graphene layers (GLs). The rectified component of the ponderomotive force between the GLs invokes resonant mechanical swinging of the top GL, resulting in drain current oscillations. To estimate the device responsivity, we solve the hydrodynamic equations for the electrons and holes in graphene which govern the plasma-wave response, and the equation describing the graphene membrane oscillations. The combined plasma-mechanical resonance raises the current amplitude by up to four orders of magnitude. The use of graphene for the elastic gate and conductive channel allows the voltage of both resonant frequencies to be tuned within a wide range.

元の言語English
記事番号505105
ジャーナルJournal of Physics D: Applied Physics
47
発行部数50
DOI
出版物ステータスPublished - 2014 12 17

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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