Kondo effect in complex mesoscopic structures

O. Entin-Wohlman, A. Aharony, and Y. Meir
Phys. Rev. B 71, 035333 – Published 21 January 2005

Abstract

We study the Kondo effect of a quantum dot placed in a complex mesoscopic structure. Assuming that electronic interactions are taking place solely on the dot, and focusing on the infinite Hubbard interaction limit, we use a decoupling scheme to obtain an explicit analytic approximate expression for the dot Green function, which satisfies certain Fermi-liquid relations at zero temperature. The details of the complex structure enter into this expression only via the self-energy for the noninteracting case. The effectiveness of the expression is demonstrated for the single-impurity Anderson model and for the T-shaped network.

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  • Received 20 September 2004

DOI:https://doi.org/10.1103/PhysRevB.71.035333

©2005 American Physical Society

Authors & Affiliations

O. Entin-Wohlman1,2,3, A. Aharony1,2, and Y. Meir1,4

  • 1Department of Physics, Ben Gurion University, Beer Sheva 84105, Israel
  • 2School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
  • 3Albert Einstein Minerva Center for Theoretical Physics, Weizmann Institute of Science, Rehovot 76100, Israel
  • 4The Ilse Katz Center for Meso- and Nano-Scale Science and Technology, Ben Gurion University, Beer Sheva 84105, Israel

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Issue

Vol. 71, Iss. 3 — 15 January 2005

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