title: Fractional shot noise in the kondo regime.
abstract: Transport through quantum dots in the Kondo regime obeys an effective low-temperature theory in terms of weakly interacting quasiparticles. Despite the weakness of the interaction, we find that the backscattering current and hence the shot noise are dominated by two-quasiparticle scattering. We show that the simultaneous presence of one- and two-quasiparticle scattering results in a universal average charge 5/3e as measured by shot-noise experiments. An experimental verification of our prediction would constitute a most stringent test of the low-energy theory of the Kondo effect.
authors.affiliation: Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot, 76100, Israel.
authors.forename: Eran
authors.initials: E
authors.lastname: Sela
authors.forename: Yuval
authors.initials: Y
authors.lastname: Oreg
authors.forename: Felix
authors.initials: F
authors.lastname: von Oppen
authors.forename: Jens
authors.initials: J
authors.lastname: Koch