Conductance Fluctuations in PbTe Wide Parabolic Quantum Wells
J. Oswald, G. Heigl, G. Span, A. Homer, P. Ganitzer, D. K. Maude, J. C. Portal
Abstract
We report on conductance fluctuations which are observed in local and non-local magnetotransport experiments. Although the Hall bar samples are of macroscopic size, the amplitude of the fluctuations from the local measurements is close to e2/h. It is shown that the fluctuations have to be attributed to edge channel effects.
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