2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/151854The 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.postscript file including 2 figs, 4 pages, Paper presented at 12th Int. Conf. on High Magnetic Fields in the Physics of Semicond. II, Wuerzburg 1996Materials ScienceMesoscale and Nanoscale Physicstext