Single-electron transport through the vortex core levels in clean superconductors

N. B. Kopnin, A. S. Mel’nikov, and V. M. Vinokur
Phys. Rev. B 68, 054528 – Published 26 August 2003
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Abstract

We develop a microscopic theory of single-electron low-energy transport in normal-metal–superconductor–normal-metal hybrid structures in the presence of applied magnetic field introducing vortex lines in a superconductor layer. We show that vortex cores in a thick and clean superconducting layer are similar to mesoscopic conducting channels where the bound core states play the role of transverse modes. The transport through not very thick layers is governed by another mechanism, namely by tunneling via vortex core levels. We apply our method to calculation of the thermal conductance along the magnetic field.

  • Received 17 April 2003

DOI:https://doi.org/10.1103/PhysRevB.68.054528

©2003 American Physical Society

Authors & Affiliations

N. B. Kopnin1,2, A. S. Mel’nikov3,4, and V. M. Vinokur4

  • 1Low Temperature Laboratory, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Finland
  • 2L. D. Landau Institute for Theoretical Physics, 117940 Moscow, Russia
  • 3Institute for Physics of Microstructures, Russian Academy of Sciences, 603950, Nizhny Novgorod, GSP-105, Russia
  • 4Argonne National Laboratory, Argonne, Illinois 60439, USA

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Issue

Vol. 68, Iss. 5 — 1 August 2003

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