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Parity effect and charge-binding transition in submicron Josephson junction arrays

  • M. V. Feigel’man
  • S. E. Korshunov
  • A. B. Pugachev
Condensed Matter

Abstract

We reconsider the Berezinski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \)-Kosterlitz-Thouless (BKT) transition to an insulating state in Coulomb-dominated Josephson junction arrays. We show that the previously predicted picture of the Cooper-pair BKT transition at T=T2 is valid only under the condition that T2 is considerably below the parity-effect temperature T*≈0.1Δ, and that even in that case it is not a rigorous phase transition but only a crossover, whereas the real phase transition takes place at T1=T2/4. Our theory is in agreement with available experimental data on Coulomb-dominated Josephson arrays and also sheds some light on the origin of the unusual reentrant temperature dependence of the resistivity in an array with a nearly critical ratio E C /E J .

PACS numbers

74.50.+r 74.80.Dm 73.23.Hk 

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Copyright information

© MAIK "Nauka/Interperiodica" 1997

Authors and Affiliations

  • M. V. Feigel’man
    • 1
  • S. E. Korshunov
    • 1
  • A. B. Pugachev
    • 1
  1. 1.L. D. Landau Institute of Theoretical PhysicsRussian Academy of SciencesMoscowRussia

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