Experimental investigation of the edge states structure at fractional filling factors

TL;DR

This paper experimentally investigates the structure of edge states at fractional filling factors in the quantum Hall regime, revealing an anomalous transport increase at the 2/3 fractional stripe, supporting the intrinsic stripe structure theory.

Contribution

First experimental demonstration of the intrinsic incompressible stripe structure at the sample edge in the fractional quantum Hall effect regime.

Findings

Anomalous increase in transport at the 2/3 fractional stripe

Supports the intrinsic stripe structure model

Experimental evidence for edge state structure in fractional QHE

Abstract

We experimentally study electron transport between edge states in the fractional quantum Hall effect regime. We find an anomalous increase of the transport across the 2/3 incompressible fractional stripe in comparison with theoretical predictions for the smooth edge potential profile. We interpret our results as a first experimental demonstration of the intrinsic structure of the incompressible stripes arising at the sample edge in the fractional quantum Hall effect regime.