Evaluation of temperature and magnetic-field dependence of pinning potential of high Tc superconductors from flux-creep resistivity experiments

Keiji Enpuku, Keiji Yoshida, Masakatsu Takeo, Kaoru Yamafuji

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Abstract

A method is presented to evaluate the temperature T and magnetic-field B dependences of the pinning potential U directly from the flux-creep resistivity experiments. Using this method, we analyse the previous experimental results in YBaCuO single crystals. It is shown that the temperature and magnetic-field dependences of the potential obtained with the present method are different from the previous model, i.e., U(T, B)∝(1 - T/Tc)3/2/B, where Tc is the critical temperature. It is also shown that the previous model can not explain these experimental results consistently.

Original languageEnglish
Pages (from-to)L2171-L2174
JournalJapanese Journal of Applied Physics
Volume28
Issue number12 A
DOIs
Publication statusPublished - Dec 1989

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All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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