Giant flux creep and irreversibility in an Y-Ba-Cu-O crystal: An alternative to the superconducting-glass model

Y. Yeshurun, A. P. Malozemoff

Research output: Contribution to journalArticlepeer-review

1710 Scopus citations

Abstract

We report strong, anisotropic magnetic relaxation of the field-cooled and zero-field-cooled magnetization along the principal axes of an Y-Ba-Cu-O single crystal and interpret it with a thermally activated flux-creep model. A simple scaling argument shows that high thermal activation causes magnetic irreversibilities and critical currents to drop below the threshold of detectability at a reduced temperature difference 1-t proportional to H23, a power frequently observed in experiment and in particular in our crystal.

Original languageEnglish
Pages (from-to)2202-2205
Number of pages4
JournalPhysical Review Letters
Volume60
Issue number21
DOIs
StatePublished - 1988

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