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Fractional Shot Noise in the Kondo Regime

Eran Sela·Yuval Oreg·Felix von Oppen·Jens Koch
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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, $e^*=5/3 e$. 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.

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Eran Sela, Yuval Oreg, Felix von Oppen, Jens Koch. 2006-03-16. Fractional Shot Noise in the Kondo Regime. https://doi.org/10.1103/physrevlett.97.086601

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