Numerical characterization of dyakonov-shur instability in gated two-dimensional electron systems

Akira Satou, Koichi Narahara

Research output: Contribution to journalArticlepeer-review


We numerically analyze the system based on the essentially non-oscillatory shock capturing scheme in order to characterize the Dyakonov-Shur (DS) instability in a gated two-dimensional electron gas system (2DES). The predictions of the linearized model are examined for a 2DES sandwiched by the top and back metallic gates. By solving Poisson equation self-consistently, the dispersive properties of plasma wave are properly estimated. Special attention is paid to the impact of dispersion to nonlinear dynamics of plasma-wave oscillation. A single-gated 2DES is also investigated for demonstrating the DS instability in practical devices.

Original languageEnglish
Article number1640024
JournalInternational Journal of High Speed Electronics and Systems
Issue number3-4
Publication statusPublished - 2016 Sep 1


  • hydrodynamic transport equations
  • terahertz
  • two-dimensional plasma wave

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Hardware and Architecture
  • Electrical and Electronic Engineering


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