The results of non-local experiments in different contact configurations are discussed in terms of a non-local behaviour of the contact arms. It is shown that the observed reproducible fluctuations can be understood to result from fluctuations of a non-local bulk current in the contact arms. The fluctuations are explained by edge channel backscattering because of potential fluctuations in the bulk region.
@article{arxiv.cond-mat/9707171,
title = {Non Local Transport 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/9707171},
year = {2008}
}
Comments
postscript file including 2 figs, 4 pages, Paper presented at 12th Int. Conf. on High Magnetic Fields in the Physics of Semicond. II, Wuerzburg 1996