Non Local Transport in PbTe Wide Parabolic Quantum Wells
J. Oswald, G. Heigl, G. Span, A. Homer, P. Ganitzer (University of, Leoben, Austria), D.K. Maude, J.C. Portal (High Magnetic Field Laboratory,, Grenoble, France)
TL;DR
This paper investigates non-local transport phenomena in PbTe wide parabolic quantum wells, revealing that observed fluctuations are due to bulk current variations and edge channel backscattering caused by potential fluctuations.
Contribution
It demonstrates that non-local fluctuations in PbTe quantum wells are caused by bulk current fluctuations and edge backscattering, providing insight into non-local transport mechanisms.
Findings
Reproducible fluctuations linked to non-local bulk current
Edge channel backscattering explained by potential fluctuations
Non-local behavior observed in contact configurations
Abstract
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.
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Taxonomy
TopicsQuantum and electron transport phenomena · Cold Atom Physics and Bose-Einstein Condensates · Topological Materials and Phenomena