Phys. Rev. Lett. 100, 036603 (2008) [4 pages]Effects of Fermi Liquid Interactions on the Shot Noise of an SU(N) Kondo Quantum DotSee Also: Erratum Received 8 August 2007; published 24 January 2008 We study shot noise in the current of quantum dots whose low-energy behavior corresponds to an SU(N) Kondo model, focusing on the case N=4 relevant to carbon nanotube dots. For general N, two-particle Fermi-liquid interactions have two distinct effects: they can enhance the noise via backscattering processes with an N-dependent effective charge, and can also modify the coherent partition noise already present without interactions. For N=4, in contrast with the SU(2) case, interactions enhance shot noise solely through an enhancement of partition noise. This leads to a nontrivial prediction for experiment. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.036603
DOI:
10.1103/PhysRevLett.100.036603
PACS:
72.70.+m, 71.10.Ay, 72.15.Qm, 73.63.Fg
See AlsoErratum: Christophe Mora, Xavier Leyronas, and Nicolas Regnault, Erratum: Current Noise through a Kondo Quantum Dot in a SU(N) Fermi Liquid State [Phys. Rev. Lett. 100, 036604 (2008)], Phys. Rev. Lett. 102, 139902 (2009). |
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