Fractional charges on an integer quantum Hall edge

TL;DR

This paper proposes methods to generate and detect fractionally charged excitations in integer quantum Hall edge states, highlighting Coulomb interactions as the cause of charge fractionalization, observable via shot noise measurements.

Contribution

It introduces novel approaches to create and measure fractional charges in integer quantum Hall systems, emphasizing Coulomb interactions as the key mechanism.

Findings

Fractional charges can be generated in integer quantum Hall edges.

Shot noise measurements can detect these fractional charges.

Coulomb interactions induce charge fractionalization in edge states.

Abstract

We propose ways to create and detect fractionally charged excitations in \emph{integer} quantum Hall edge states. The charge fractionalization occurs due to the Coulomb interaction between electrons propagating on different edge channels. The fractional charge of the soliton-like collective excitations can be observed in time resolved or frequency dependent shot noise measurements.