Effect of stripe ordering on the anisotropic superconductivity in La 1.6−xNd 0.4Sr xCuO 4 single crystals

Abstract

The in-plane and out-of-plane resistivities of La 1.6− x Nd 0.4Sr x CuO 4 single crystals were measured under magnetic fields up to 8 T. It was found that the superconducting transition temperature ( T c onset ) in the out-of-plane resistivity ρ c is higher than that of the in-plane ρ ab , and the resistivity anisotropy ratio ρ c / ρ ab increases with the enhancement of the static stripe order. This result indicates that the static stripe phase has different effects on the ab-plane and c-axis resistivities. From the study of the upper critical field, one can find that the anisotropy parameter and in-plane coherence length increase with the enhancement of static stripe phase.