Angular dependence of the upper critical field of Bi2.2Sr2Ca0. 8Cu2O8+δ

T. T.M. Palstra*, B. Batlogg, L. F. Schneemeyer, R. B. Van Dover, J. V. Waszczak

*Corresponding author for this work

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Abstract

We have measured the electrical resistivity of Bi2.2Sr2Ca0.8Cu2O8+δ in the vicinity of Tc for various angles between the [CuO2] double layers of the crystal and the magnetic field. Defining Tc at the transition midpoints, we have measured values for -dHc2/dT=45 T/K and -dHc2/dT=0.75 T/K for the magnetic field parallel and perpendicular to the [CuO2] planes, respectively. This results in an anisotropy of a factor 60. The numerical results are sensitive to the definition of Tc and larger values for the anisotropy cannot be excluded. The results are compared with the anisotropic three-dimensional Ginzburg-Landau theory.

Original languageEnglish
Pages (from-to)5102-5105
Number of pages4
JournalPhysical Review B
Volume38
Issue number7
DOIs
Publication statusPublished - 1 Jan 1988
Externally publishedYes

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    Palstra, T. T. M., Batlogg, B., Schneemeyer, L. F., Van Dover, R. B., & Waszczak, J. V. (1988). Angular dependence of the upper critical field of Bi2.2Sr2Ca0. 8Cu2O8+δ. Physical Review B, 38(7), 5102-5105. https://doi.org/10.1103/PhysRevB.38.5102