Fractional Shot Noise in the Kondo Regime

Abstract

Low temperature transport through a quantum dot in the Kondo regime proceeds by a universal combination of elastic and inelastic processes, as dictated by the low-energy Fermi-liquid fixed point. We show that as a result of inelastic processes, the charge detected by a shot-noise experiment is enhanced relative to the noninteracting situation to a universal fractional value, $e^{\ast }=5/3e$. Thus, shot noise reveals that the Kondo effect involves many-body features even at low energies, despite its Fermi-liquid nature. We discuss the influence of symmetry breaking perturbations.

4 pages, 2 figures

References in corpus (2)

• Towards full counting statistics for the Anderson impurity model
• Multiple Particle Scattering in Quantum Point Contacts

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