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

M. V. Feigel'man, S. E. Korshunov, A. B. Pugachev

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


We reconsider the Berezinskiǐ-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 EC/EJ.

Original languageEnglish
Pages (from-to)566-571
Number of pages6
JournalJETP Letters
Issue number7
Publication statusPublished - 1997
Externally publishedYes


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