First-order melting transition observed from resistivity measurements in ultra-pure YBa2Cu3O7-δ single crystals with high twin boundary density

Jean-Claude Grivel, Y. Eltsev, M. Andersson, O. Rapp, A. Erb, E. Walker, R. Flükiger

    Research output: Contribution to journalJournal articleResearch

    Abstract

    R(T) measurements have been performed on optimally and overdoped heavily twinned high-purity YBa2Cu3O7-delta single crystals, under a magnetic field B oriented parallel to the twin boundary planes (B parallel to c). The characteristic feature attributed to the flux line lattice melting transition has been observed in the overdoped case for B greater than or equal to 5 T. The first-order transition was not found in the optimally doped sample, even when B was tilted with respect to the c-axis. Differences between these samples are discussed. (C) 1999 Elsevier Science B.V. All rights reserved.
    Original languageEnglish
    JournalPhysica C: Superconductivity and its Applications
    Volume322
    Issue number3-4
    Pages (from-to)203-208
    ISSN0921-4534
    DOIs
    Publication statusPublished - 1999

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