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Semiconductors

, Volume 34, Issue 7, pp 807–809 | Cite as

Plasma oscillations in two-dimensional semiconductor superstructures

  • S. Yu. Glazov
  • S. V. Kryuchkov
Low-Dimensional Systems

Abstract

The possibility of plasma oscillations occurring in a two-dimensional electron gas with a superstructure was studied taking into account the Umklapp processes. In the case of high temperatures (
where Δ is the width of the conduction miniband and T is temperature expressed in energy units), the dispersion relation ω(k) was obtained. It is shown that, for small values of
, the plasmon spectrum features the characteristic dispersion ω2k, which corresponds to a two-dimensional electron gas without a superstructure. For arbitrary values of k, the spectrum is periodic with a period of 2π/d. Numerical estimation of the characteristic frequency of the plasma oscillations for the two-dimensional superstructures currently under experimental investigation yields 1013 s−1.

Keywords

Experimental Investigation Dispersion Relation Magnetic Material Characteristic Frequency Electromagnetism 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© MAIK "Nauka/Interperiodica" 2000

Authors and Affiliations

  • S. Yu. Glazov
    • 1
  • S. V. Kryuchkov
    • 1
  1. 1.Volgograd State Pedagogical UniversityVolgogradRussia

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