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Breakdown of dissipationless quantum hall conduction in narrow channels

Authors
Journal
Surface Science
0039-6028
Publisher
Elsevier
Publication Date
Volume
196
Identifiers
DOI: 10.1016/0039-6028(88)90679-6
Disciplines
  • Physics

Abstract

Abstract The transverse magnetoresistance of the two-dimensional electron gas in GaAs/AlGaAs heterostructures in which there is a narrow constriction in the conducting channel shows remarkable new quantum effects for current densities and magnetic fields close to the region of breakdown of the dissipationless quantum Hall effect. To explain the main features of the experimental results, a model involving quasi-elastic inter-Landau-level scattering has been proposed.

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