Mixed-state Hall effect in Hg- And Tl-based superconducting thin films containing columnar defects

W. N. Kang, Wan Seon Kim, Sung Ik Lee, B. W. Kang, J. Z. Wu, Q. Y. Chen, W. K. Chu, C. W. Chu

研究成果: Article同行評審

5 引文 斯高帕斯(Scopus)

摘要

We have investigated the mixed-state Hall resistivity ρxy and longitudinal resistivity σxx in HgBa2CaCu2O6, HgBa2Ca2Cu3O8, and Tl2Ba2CaCu2O8 thin films for various parameters, such as densities of columnar defects, number of CuO2 planes, and anisotropy ratios, as a function of the magnetic field up to 18 T. The scaling exponent β in ρxy = Aρxxβ is 1.9 ± 0.1 in the clean limit (CL) at high fields and low T whereas β is 1 β 0.1 in the moderately clean limit (MCL) at low fields and high T. We also find the triple sign reversal in the HgBa2CaCu2O6 films containing high-density columnar defects. These results can be interpreted within the context of a recent theory based on the midgap states in the vortex core.

原文English
頁(從 - 到)1235-1236
頁數2
期刊Physica C: Superconductivity and its applications
341-348
發行號PART 3
DOIs
出版狀態Published - 2000

All Science Journal Classification (ASJC) codes

  • 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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