Peak effect in twinned superconductors

A. I. Larkin, M. C. Marchetti, V. M. Vinokur

Research output: Contribution to journalArticlepeer-review

74 Scopus citations

Abstract

A sharp maximum in the critical current Jc as a function of temperature just below the melting point of the Abrikosov flux lattice has recently been observed in both low- and high-temperature superconductors. This peak effect is strongest in twinned crystals for fields aligned with the twin planes. We propose that this peak signals the breakdown of the collective pinning regime and the crossover to strong pinning of single vortices on the twin boundaries. This crossover is very sharp and can account for the steep drop of the differential resistivity observed in experiments.

Original languageEnglish (US)
Pages (from-to)2992-2995
Number of pages4
JournalPhysical Review Letters
Volume75
Issue number16
DOIs
StatePublished - 1995

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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