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Two-Dimensional Magnetoplasmons in Gated AlxGa1−xAs-GaAs Heterojunctions

  • M. Tewordt
  • E. Batke
  • J. P. Kotthaus
  • G. Weimann
  • W. Schlapp
Conference paper
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 87)

Abstract

The magnetoplasmon dispersion of inversion electrons in gated AlxGa1−xAs-GaAs heterojunctions is investigated at high magnetic fields (B≲12T) and low electron densities (0<Ns<4·1011cm −2) in transmission with Fourier spectroscopy. The magnetoplasmon resonance position at B≳2.5T is well described by the classical local dispersion. Magnetoplasmon resonance line shape anomalies are discussed in terms of a magnetic field dependent line width partially caused by an inhomogeneous surface charge density.

Keywords

Filling Factor Gate Voltage Cyclotron Resonance High Magnetic Field Fractional Quantum Hall Effect 
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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References

  1. 1.
    T. Englert, J. C. Maan, C. Uihlein, D. C. Tsui, and A. C. Gossard, Solid State Commun. 46, 545 (1983)CrossRefGoogle Scholar
  2. 2.
    D. Heitmann, M. Ziesmann, and L. L. Chang, Phys. Rev. B 34, 7463 (1986)CrossRefGoogle Scholar
  3. 3.
    E. Batke, H. L. Störmer, A. C. Cossard, and J. H. English, Phys. Rev. B 37, 3093 (1988)CrossRefGoogle Scholar
  4. 4.
    W. Seidenbusch, E. Gornik, and G. Weimann, Phys. Rev. B 36, 9155 (1987)CrossRefGoogle Scholar
  5. 5.
    E. Batke, D. Heitmann, and C. W. Tu, Phys. Rev. B 34, 6951 (1986)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin, Heidelberg 1989

Authors and Affiliations

  • M. Tewordt
    • 1
  • E. Batke
    • 1
  • J. P. Kotthaus
    • 1
  • G. Weimann
    • 2
  • W. Schlapp
    • 2
  1. 1.Institut für Angewandte PhysikUniversität HamburgHamburg 36Fed. Rep. of Germany
  2. 2.Forschungsinstitut der Deutschen BundespostDarmstadtFed. Rep. of Germany

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