Anisotropic critical current density in superconducting Bi2Sr2CaCu2O8 crystals

2 January 1989

journal article
research article
Published by AIP Publishing in Applied Physics Letters

Vol. 54 (1), 72-74
https://doi.org/10.1063/1.101437

Abstract

Critical current densities and resistivities were measured in a single crystal of the high Tc superconductor Bi2Sr2CaCu2O8 within the ab basal plane (∥) and along the c direction (⊥). A large anisotropy in critical current density is found, Jc∥/Jc⊥≊103, in quantitative agreement with the large normal-state resistivity anisotropy near Tc. The data provide strong evidence for a two-dimensional layered structure of metallic planes separated by semi-insulating barriers.

Keywords

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