Angular dependence of flux pinning in high-Tc superconducting films

H. E. Horng*, H. H. Sung, B. C. Yao, H. C. Yang

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

4 引文 斯高帕斯(Scopus)

摘要

We have investigated the angular dependence of the dissipative characteristics of YBa2>Cu3>O7-y(>YBCO) and >Bi2>Sr2>CaCu2>O8-y(>BSCCO) films by measuring the resistivity in a field. The dissipation can be described by the thermal activated flux creep model, >R=RO exp(-U(H,T,θ)/kBT). U depends on the magnetic field as well as the angle, θ, the magnetic field makes with the c-axis. We found that the activation energy of YBCO films decreases by a factor of 2 while that of BSCCO films decreases by a factor of about 10 in >H = 5.5>T and at >T/Tc = 0.93 as one varies θ from 90° to 0°, where θ is the angle between the c axis and the direction of the field.

原文英語
頁(從 - 到)2221-2222
頁數2
期刊Physica C: Superconductivity and its applications
185-189
發行號PART 4
DOIs
出版狀態已發佈 - 1991 十二月 1

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學
  • 能源工程與電力技術
  • 電氣與電子工程

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