Kondo screening cloud effects in mesoscopic devices

Pascal Simon and Ian Affleck
Phys. Rev. B 68, 115304 – Published 11 September 2003
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Abstract

We study how finite-size effects may appear when a quantum dot in the Kondo Coulomb blockade regime is embedded into a mesoscopic device with finite wires. These finite-size effects appear when the size of the mesoscopic device containing the quantum dot is of the order of the size of a Kondo cloud and affect all thermodynamic and transport properties of the Kondo quantum dot. We also generalize our results to the experimentally relevant case where the wires contain several transverse modes/channels. Our results are based on perturbation theory, Fermi liquid theory, and slave boson mean-field theory.

  • Received 14 May 2003

DOI:https://doi.org/10.1103/PhysRevB.68.115304

©2003 American Physical Society

Authors & Affiliations

Pascal Simon*

  • Department of Physics and Astronomy, University of Basel, CH-4056 Basel, Switzerland
  • LEPES & LPM2C, CNRS, 25 Avenue des Martyrs, 38042 Grenoble, France

Ian Affleck

  • Physics Department, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA

  • *Electronic address: pascal.simon@grenoble.cnrs.fr
  • Electronic address: affleck@physics.bu.edu

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Vol. 68, Iss. 11 — 15 September 2003

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