Current noise through a Kondo quantum dot in a SU(N) Fermi liquid state
Christophe Mora, Xavier Leyronas, Nicolas Regnault
TL;DR
This paper analyzes current noise in an SU(N) Kondo quantum dot within the Fermi liquid regime, revealing how temperature and quasiparticle interactions influence noise characteristics, with implications for experimental observations.
Contribution
It provides a detailed calculation of current noise in the SU(N) Kondo model, connecting thermal and shot noise, and highlights the impact of quasiparticle interactions in the SU(4) case.
Findings
Temperature corrections to noise are significant in experiments.
Quasiparticle interactions increase shot noise in SU(4).
Results unify Johnson-Nyquist and shot noise behaviors.
Abstract
The current noise through a mesoscopic quantum dot is calculated and analyzed in the Fermi liquid regime of the SU(N) Kondo model. Results connect the Johnson-Nyquist noise to the shot noise for an arbitrary ratio of voltage and temperature, and show that temperature corrections are sizeable in usual experiments. For the experimentally relevant SU(4) case, quasiparticle interactions are shown to increase the shot noise.
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