Magnetic relaxation and critical current in an YBaCuO crystal

Y. Yeshurun, A. P. Malozemoff, F. Holtzberg

Research output: Contribution to journalArticlepeer-review

47 Scopus citations


We have measured the temperature dependence of magnetic relaxation and critical current in an YBaCuO single crystal. Unusually strong time-logarithmic magnetic relaxation is observed. The relaxation rate increases initially with temperature, peaks at ≅25 K and slows down at higher temperatures. The results, interpreted with a thermally activated flux model, yield a low-temperature pinning energy U0≅0.02 eV. This low pinning energy results in an unusually rapid decrease of the critical current as temperature is increased.

Original languageEnglish
Pages (from-to)5797-5799
Number of pages3
JournalJournal of Applied Physics
Issue number10
StatePublished - 1988
Externally publishedYes


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