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Transport in a shunted surface superlattice with a perpendicular magnetic field

Authors
Journal
Physica E Low-dimensional Systems and Nanostructures
1386-9477
Publisher
Elsevier
Publication Date
Volume
32
Identifiers
DOI: 10.1016/j.physe.2005.12.071
Keywords
  • Cleaved-Edge-Overgrowth
  • Superlattice
  • Bloch Oscillations
  • Magnetic Field

Abstract

Abstract We experimentally investigate the transport through a shunted surface superlattice under the influence of a magnetic field applied perpendicular to the current direction. The current–voltage characteristics of these surface superlattices exhibit a peak which is followed by a wide region of negative differential resistance. The application of a transverse magnetic field has a profound influence on the position and height of this peak. The recorded shifts are compared to the predictions of different superlattice transport theories. Since these theories predict a different dependence on the magnetic field strength, the transport mechanism in the surface superlattice structures can be uniquely determined.

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