Vortex variable-range-hopping resistivity in superconducting films

Matthew P. A. Fisher, T. A. Tokuyasu, and A. P. Young
Phys. Rev. Lett. 66, 2931 – Published 3 June 1991
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Abstract

We study both classical and quantum vortex creep in disordered thin-film superconductors in an applied magnetic field. Quantum tunneling of vortices leads to a variable-range-hopping resistivity with a non-Arrhenius temperature dependence at low T. Mott’s 1/3 law is modified by long-range vortex interactions, and a numerical analysis enables us to estimate a temperature exponent between roughly 2/3 and 4/5. At higher T, a classical hopping regime is expected with a current-density scale for nonlinearities varying (roughly) as T3.

  • Received 13 November 1990

DOI:https://doi.org/10.1103/PhysRevLett.66.2931

©1991 American Physical Society

Authors & Affiliations

Matthew P. A. Fisher and T. A. Tokuyasu

  • IBM Research, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598

A. P. Young

  • Service de Physique Theorique, Commissariat á l’ Energie Atomique Saclay 91191 Gif-sur-Yvette, France

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Issue

Vol. 66, Iss. 22 — 3 June 1991

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