Plasmon modes of coupled quantum Hall edge channels in the presence of disorder-induced tunneling

Coupled quantum Hall edge channels show intriguing nontrivial modes, for example, charge and neutral modes at Landau level filling factors 2 and 2/3. We propose an appropriate and effective model with a Coulomb interaction and disorder-induced tunneling characterized by coupling capacitances and tunneling conductances, respectively. This model explains how the transport eigenmodes, within the interaction- and disorder-dominated regimes, change with the coupling capacitance, tunneling conductance, and measurement frequency. We propose frequency- and time-domain transport experiments, from which eigenmodes can be determined using this model.

Automated summary

The paper introduces a model to explain the nontrivial modes observed in coupled quantum Hall edge channels. This model characterizes the Coulomb interaction and disorder-induced tunneling through coupling capacitances and tunneling conductances. The authors also propose transport experiments in frequency and time domains for determining eigenmodes using this model.