Hanbury-Brown-Twiss correlations and noise in the charge transfer statistics through a multiterminal Kondo dot

Details Hanbury-Brown-Twiss correlations and noise in the charge transfer statistics through a multiterminal Kondo dot Hanbury-Brown-Twiss correlations and noise in the charge transfer statistics through a multiterminal Kondo dot

2006-07-31

arxiv.org/abs/cond-mat/0607824v1

Phys. Rev. Lett. 98, 056603 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages

Scientific paper

10.1103/PhysRevLett.98.056603

We analyze the full counting statistics of charge transfer through a quantum dot in the Kondo regime, when coupled to an arbitrary number of terminals N. At the unitary Kondo fixed point and for N>2 we recover distinct anticorrelations of currents in concurring transport channels, which are related to the fermionic Hanbury Brown and Twiss (HBT) antibunching. This effect weakens as one moves away from the fixed point. Furthermore, we identify a special class of current correlations that are due entirely to the virtual polarization of the Kondo singlet. These can be used for extracting information on the parameters of the underlying Fermi-liquid model.

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