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Critical current in a system of two superconductors connected by a short small-diameter normal metal bridge

  • Yu. N. Ovchinnikov
  • A. I. Larkin
Condensed Matter

Abstract

It is shown that states with phase increments δϕ>π can form in superconductor-narrowing (normal metal)-superconductor systems. If the conditions al≪ξ(0), where a is the cross-sectional size of the narrowing, l is the length of narrowing, and ξ(0) is the correlation radius at zero temperature, are satisfied, there is a region of parameters (a, l, ξ(0), T) in which the critical current is attained in solutions with a phase difference δϕ>π.

PACS numbers

74.50.+r 74.60.Jg 

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Copyright information

© MAIK "Nauka/Interperiodica" 2002

Authors and Affiliations

  • Yu. N. Ovchinnikov
    • 1
    • 2
  • A. I. Larkin
    • 1
    • 3
  1. 1.Landau Institute for Theoretical PhysicsRussian Academy of SciencesMoscowRussia
  2. 2.Max-Planck Institute for Physics of Complex SystemDresdenGermany
  3. 3.Theoretical Physical InstituteUniversity of MinnesotaMinneapolisUSA

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