Hanbury Brown–Twiss Correlations and Noise in the Charge Transfer Statistics through a Multiterminal Kondo Dot

T. L. Schmidt, A. Komnik, and A. O. Gogolin
Phys. Rev. Lett. 98, 056603 – Published 30 January 2007

Abstract

We analyze the charge transfer statistics through a quantum dot in the Kondo regime, when coupled to an arbitrary number of terminals N. Special attention is paid to current cross correlations between concurring transport channels, which show distinct Hanbury Brown–Twiss antibunching for N>2 reflecting the fermionic nature of charge carriers. While this effect weakens as one moves away from the Kondo fixed point, a new type of correlations between nonconcurring channels emerges which are due entirely to the virtual polarization of the Kondo singlet. As these are not obscured by the background from fixed-point correlations they provide a promising means for extracting information on the parameters of the underlying Fermi-liquid model from the experimental data.

  • Received 1 August 2006

DOI:https://doi.org/10.1103/PhysRevLett.98.056603

©2007 American Physical Society

Authors & Affiliations

T. L. Schmidt1, A. Komnik2, and A. O. Gogolin3

  • 1Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, D-79104 Freiburg, Germany
  • 2Service de Physique Théorique, CEA Saclay, F-91191 Gif-sur-Yvette, France
  • 3Department of Mathematics, Imperial College London, 180 Queen’s Gate, London SW7 2AZ, United Kingdom

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Issue

Vol. 98, Iss. 5 — 2 February 2007

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