Polarons in 2D-Systems Subjected to a Magnetic Field

  • J. T. Devreese
  • F. M. Peeters
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 87)


A theoretical survey will be given of the properties of quasi-two-dimensional polarons in a magnetic field. One polaron and many-polaron effects will be discussed. The cyclotron resonance absorption spectrum of a gas of quasi-two-dimensional polarons is calculated using linear response theory. The calculation is based on a memory function formalism. Band non-parabolicity and the many-body character of the system with inclusion of the full dynamical screening of the electron-phonon interaction is incorporated. Comparison is made with experimental results on the cyclotron mass in GaAs/Al x Ga1−x As heterostructures. We found that for electron densities larger than 1.4 × 1011 cm −2 the polaron mass renormalization is smaller than for the corresponding bulk GaAs system.


Cyclotron Resonance Landau Level Linear Response Theory Polaron Effect Cyclotron Mass 
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Copyright information

© Springer-Verlag Berlin, Heidelberg 1989

Authors and Affiliations

  • J. T. Devreese
    • 1
    • 2
  • F. M. Peeters
    • 1
    • 3
  1. 1.Department of PhysicsUniversity of Antwerp (U.I.A.)AntwertpBelgium
  2. 2.Also at R.U.C.A.B-2020 Antwerp and University of TechnologyEindhovenThe Netherlands
  3. 3.National Fund for Scientific ResearchBelgium

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