Vortex Drag in Quantum Hall Effect

TL;DR

This paper introduces a novel model explaining vortex-induced drag effects in quantum Hall systems, revealing periodic sign changes of the dragged electric field based on layer filling factors.

Contribution

It proposes a new vortex-based model for momentum and electric field transfer in quantum Hall bilayers, highlighting periodic sign reversal of the drag effect.

Findings

Drag electric field sign oscillates with layer filling factor differences.

Vortex system interactions are key to understanding interlayer momentum transfer.

Model predicts periodic behavior not previously described in quantum Hall drag studies.

Abstract

A new model of momentum and electric field transfer between two adjacent 2D electron systems in the Quantum Hall Effect is proposed. The drag effect is due to momentum transfer from the vortex system of one layer to the vortex system of another layer. The remarkable result of this approach is periodical change of $sign$ of the dragged electric field with difference between the layer filling factors.