Critical Current Enhancement due to an Electric Field in a Granular d-Wave Superconductor

Abstract

We study the effects of an electric-field in the transport properties of bulk granular superconductors with different kinds of disorder. We find that for a d-wave granular superconductor with random $\pi$-junctions the critical current always increases after applying a strong electric field, regardless of the polarity of the field. This result plus a change in the voltage as a function of the electric field are in good agreement with experimental results in ceramic high T_c superconductors.

Final version with updated references. To be published in Phys. Rev. Lett. (issue of Nov. 22, 1999)

References in corpus (1)

• Analog of Magnetoelectric Effect in High-Tc Granular Superconductors

Cited by in corpus (7)

• Electric field dependence of thermal conductivity of a granular superconductor: Giant field-induced effects predicted
• Aging Effect in Ceramic Superconductors
• AC resistivity of d-wave ceramic superconductors
• Nonlinear AC resistivity in s-wave and d-wave disordered granular superconductors
• Microwave absorption in s- and d-wave disordered superconductors
• Critical Current of a Granular d-wave superconductor
• Phase-dependent heat current of granular Josephson junction for different geometries