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1. Strongly interacting 2D electron systems: Evidence for enhanced 1D edge-channel coupling

Author

Marty, C., Reichl, C., Parolo, S., Grandt-Ionita, I., Scharnetzky, J., Dietsche, W., and Wegscheider, W.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Strongly Correlated Electrons
Abstract

We observe nearly vanishing Hall resistances for integer filling factors in a counterflow (CF) experiment on a density balanced 2D bilayer system. Filling factor dependent equilibration lengths demonstrate enhanced 1D coupling via edge-channels. Due to the narrow barrier the edge-modes of the two 2DEGs are in close proximity allowing for 1D excitonic correlations. Electron drag measurements confirm the observed quantum state selective coupling between the layers., Comment: Added references

Published
2023

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