Quantum dot in the Kondo regime coupled to p-wave superconductors

Tomosuke Aono, Anatoly Golub, and Yshai Avishai
Phys. Rev. B 68, 045312 – Published 18 July 2003
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Abstract

The physics of junctions containing p-wave superconducting and normal leads weakly coupled to an Anderson impurity in the Kondo regime is elucidated. For p-wave (unlike s wave) superconducting leads, midgap surface states play an important role in the tunneling process and help the formation of the Kondo resonance. The current, shot-noise power, and Fano factor are calculated and displayed as functions of the applied voltage V in the subgap region eV<Δ (the superconducting gap). In addition, the Josephson current for a quantum dot in the Kondo regime weakly coupled on both sides to p-wave superconductors is computed as function of temperature and phase. The peculiar differences between the cases of s-wave and p-wave superconducting leads are pointed out.

  • Received 10 December 2002

DOI:https://doi.org/10.1103/PhysRevB.68.045312

©2003 American Physical Society

Authors & Affiliations

Tomosuke Aono1, Anatoly Golub1, and Yshai Avishai1,2

  • 1Department of Physics, Ben-Gurion University, Beer-Sheva, Israel
  • 2Ilse Katz Center, Ben-Gurion University, Beer-Sheva, Israel

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Issue

Vol. 68, Iss. 4 — 15 July 2003

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