Temperature dependence of the activation energy at low magnetic induction in high-Tc superconductors

Z. D. Wang, Z. J. Huang, Y. Y. Xue, P. H. Hor, C. S. Ting, C. W. Chu

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The activation energy U0 has been measured for melt-textured YBa2Cu3O7 samples at low magnetic induction Bc. The data indicate that U0 has a nearly linear temperature dependence in a certain temperature regime (1060 K) and is insensitive to magnetic induction. In terms of the collective-pinning ideas and taking into account the modification due to the thermal fluctuation of the flux-line lattice, we propose a possible theoretical explanation. Meanwhile, the critical current Jc, which depends upon the magnetic induction B as Jc1/ B, was obtained.

Original languageEnglish
Pages (from-to)2778-2783
Number of pages6
JournalPhysical Review B
Volume44
Issue number6
DOIs
Publication statusPublished - 1991

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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