Peak effect in superconductors: Melting of Larkin domains

Chao Tang, Xinsheng Ling, S. Bhattacharya, P. M. Chaikin

    Research output: Contribution to journalArticlepeer-review


    Motivated by the recent observations of the peak effect in high-Tc YBCO superconductors, we re-examine the origin of this unusual phenomenon. We propose that the sharp peak in the critical current as a function of temperature or magnetic field is an interesting manifestation of vortex-lattice melting in the presence of weak random pinning. Specifically, the rise of the critical current with increasing temperature or field is a result of a crossover from the Larkin pinning length to a length scale set by thermal fluctuations.

    Original languageEnglish (US)
    Pages (from-to)597-602
    Number of pages6
    JournalEurophysics Letters
    Issue number8
    StatePublished - Sep 10 1996

    ASJC Scopus subject areas

    • General Physics and Astronomy


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