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

研究成果: Article同行評審

4 引文 斯高帕斯(Scopus)

摘要

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.

原文English
頁(從 - 到)2778-2783
頁數6
期刊Physical Review B
44
發行號6
DOIs
出版狀態Published - 1991

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學

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