Mechanism of self-excitation of terahertz plasma oscillations in periodically double-gated electron channels

V. Ryzhii, A. Satou, M. Ryzhii, T. Otsuji, M. S. Shur

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40 Citations (Scopus)

Abstract

We develop a device model for a heterostructure device with an electron channel and with a periodic system of interdigitated gates. Using this model, we find the conditions of the self-excitation of plasma oscillations in portions of the channel. It is shown that the self-excitation of plasma oscillations in these devices and the terahertz emission observed in the experiments (Otsuji et al 2006 Appl. Phys. Lett. 89 263502; Meziani et al 2007 Appl. Phys. Lett. 90 061105; Otsuji et al 2007 Solid-State Electron. 51 1319) might be attributed to the electron-transit-time effect in the barrier regions.

Original languageEnglish
Article number384207
JournalJournal of Physics Condensed Matter
Volume20
Issue number38
DOIs
Publication statusPublished - 2008 Sep 24

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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