Anisotropy in the electrical resistivity and upper critical magnetic field of single-crystal Pb2Sr2Ho0.5Ca0.5Cu3O8

T. Noji, Y. Koike, H. Iwasaki, M. Kato, N. Kobayashi, Y. Saito

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Abstract

The anisotropy in the electrical resistivity ρ{variant} and the anisotropy in the upper critical magnetic field Hc2 have been investigated for Pb2Sr2Ho0.5Ca0.5Cu3O8 single crystals. The anisotropy in the resistivity, ρ{variant}c ρ{variant}ab, is 29 at 3 00K and 140 at 100K. The anisotropy in Hc2 has been determined from the angular dependence of ρ{variant} ab(H, θ) under various constant magnetic fields. The angular dependence of Hc2 is well explained by the effective mass model. The value of γ ≡ Hc2|/Hc2 is estimated as 12, which is larger than the 4-5 in YBa2Cu3O7 and much smaller than the 19-200 in Bi2Sr2CaCu2O8. Consequently, it has been concluded that the anisotropy does not always depend on the thickness of the blocking layer but on the overlap of the electronic wave functions along the c-axis.

Original languageEnglish
Pages (from-to)1421-1422
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume235-240
Issue numberPART 2
DOIs
Publication statusPublished - 1994 Dec

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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