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 e^2/h. It is shown that the fluctuations have to be attributed to edge channel effects.
Cite
@article{arxiv.cond-mat/9707160,
title = {Conductance Fluctuations in PbTe Wide Parabolic Quantum Wells},
author = {J. Oswald and G. Heigl and G. Span and A. Homer and P. Ganitzer and D. K. Maude and J. C. Portal},
journal= {arXiv preprint arXiv:cond-mat/9707160},
year = {2009}
}
Comments
postscript file including 3 figs, 3 pages, Paper presented at 3rd Int. Symposium on "New Phenomena in Mesoscopic Structures" in Maui, Hawaii 1995