Non-local effects of edge excitations in the quantum Hall regime

TL;DR

This paper investigates how nuclear diffusion influences non-local edge excitations in the integer quantum Hall effect, revealing that nuclear diffusion is effectively one-dimensional and impacts local equilibrium conditions.

Contribution

It introduces a novel sample geometry to study non-local effects and demonstrates the role of nuclear diffusion in the quantum Hall regime.

Findings

Nuclear diffusion affects edge excitation behavior.

Nuclear diffusion is effectively one-dimensional.

Local equilibrium conditions are influenced by nuclear polarization.

Abstract

We use a novel sample geometry to study non-local effects of edge excitations in the integer quantum Hall effect regime. We find that the condition of local equilibrium at the quantum Hall edge is affected by the diffusion of dynamically polarized nuclei. Our analysis indicates, that the nuclear diffusion is effectively one-dimensional in the present experiment.