Fractional charges on an integer quantum Hall edge

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.

4 pages, 1 figure; Revised according to referee's comments, accepted for publication in Phys. Rev. Lett