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2002
Journal Article
Title

Coherent hall effect in a semiconductor superlattice

Other Title
Kohärenter Halleffekt in einem Halbleiter Übergitter
Abstract
The coherent Hall effect denotes the transient Hall response of impulsively excited coherent charge-carrier wave packets in a solid. We report the first experimental study of this phenomenon (i) using a semiconductor superlattice in crossed electric and magnetic fields as a model for three-dimensional materials and (ii) employing a contactless optoelectronic technique to probe the transient currents. Two field regimes with distinctly different oscillatory wave packet dynamics are found, separated from each other by a transition region where all oscillations are suppressed.
Author(s)
Bauer, T.
Kolb, J.
Hummel, A.B.
Roskos, H.G.
Kosevich, Y.
Köhler, Klaus  
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Journal
Physical review letters  
DOI
10.1103/PhysRevLett.88.086801
Language
English
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Keyword(s)
  • III-V Halbleiter

  • III-V semiconductor

  • superlattice

  • Übergitter

  • optical measurement

  • optische Messung

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