Edge Channel Dominated Magnetotransport in PbTe Wide Parabolic Quantum Wells
J. Oswald, G. Span, A. Homer, G. Heigl, P. Ganitzer (University of, Leoben, Austria), D.K. Maude, J.C. Portal (High Magnetic Field Laboratory,, Grenoble, France)
TL;DR
This paper reports on the observation of quantum Hall-like effects and non-local signals in wide parabolic quantum wells of PbTe, revealing a strong correspondence with standard quantum Hall systems.
Contribution
It demonstrates the presence of quantum Hall phenomena in a quasi 3D PbTe system, expanding understanding of magnetotransport in wide quantum wells.
Findings
Plateau-like structures in Hall resistance
Correspondence with quantum Hall effect
Non-local signals indicating complex transport phenomena
Abstract
In PbTe wide parabolic quantum wells (WPQW) a plateau-like structure is observed in the Hall resistance, which corresponds to the Shubnikov-de Haas oscillations in the same manner as known from the quantum Hall effect. At the same time a non-local signal is observed which corresponds to the structure in Rxx and Rxy. We find a striking correspondence between a standard quantum Hall system and this quasi 3D WPQW system.
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Taxonomy
TopicsQuantum and electron transport phenomena · Quantum Computing Algorithms and Architecture · Quantum many-body systems