Angular Dependence of the Upper Critical Field of Bi2.2Sr2Ca0. 8Cu2O8+Δ

Authors

T. T.M. Palstra, University of TwenteFollow
Bertram Batlogg, ETH ZurichFollow
Lynn Schneemeyer, Montclair State UniversityFollow
R. B. Van Dover, Cornell UniversityFollow
Joseph V. Waszczak, University of WashingtonFollow

Document Type

Article

Publication Date

1-1-1988

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.

DOI

10.1103/PhysRevB.38.5102

Montclair State University Digital Commons Citation

Palstra, T. T.M.; Batlogg, Bertram; Schneemeyer, Lynn; Van Dover, R. B.; and Waszczak, Joseph V., "Angular Dependence of the Upper Critical Field of Bi2.2Sr2Ca0. 8Cu2O8+Δ" (1988). Department of Chemistry and Biochemistry Faculty Scholarship and Creative Works. 458.
https://digitalcommons.montclair.edu/chem-biochem-facpubs/458