Magneto-Tunneling Between 2-Dimensional Systems

  • H. T. Grahn
Conference paper
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 111)


Non-resonant and resonant Landau-level tunneling between strongly confined 2D-systems is investigated in a magnetic field. Non-resonant tunneling through a single barrier is studied in a parallel magnetic field at the boundary between electric field domains in a doped superlattice. Above 7 T a breakdown of perturbation theory appears in the magnetic field induced misaligment of the energy levels. Resonant Landau-level tunneling in a perpendicular magnetic field is observed in an undoped superlattice with optically excited carriers. Due to the strong confinement of the GaAs wells tunneling between the lowest Landau level and Landau levels with an index up to 9 in the neighboring well is detected. The selection rule of conserving the Landau level index is broken by elastic scattering or phonon assisted tunneling.


Magnetic Field Landau Level Magnetic Field Dependence Parallel Magnetic Field Phonon Emission 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • H. T. Grahn
    • 1
  1. 1.Max-Planck-Institut für FestkörperforschungStuttgart 80Fed. Rep. of Germany

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