Strongly interacting two-dimensional electron systems: Evidence for enhanced one-dimensional edge-channel coupling
Abstract
We observe nearly vanishing Hall resistances for integer filling factors in a counterflow experiment on a density-balanced two-dimensional (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 2D electron gases are in close proximity allowing for exciton formation at the sample edges. Electron drag measurements confirm the observed quantum-state-selective coupling between the layers. Show more
Publication status
publishedExternal links
Journal / series
Physical Review BVolume
Pages / Article No.
Publisher
American Physical SocietyOrganisational unit
03833 - Wegscheider, Werner / Wegscheider, Werner
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