Current sharing between superconducting film and normal metal

TL;DR

This paper presents a 2D model analyzing current sharing in YBCO-coated conductors, comparing surround and one-sided stabilizers, revealing conditions where one stabilizer outperforms the other in stabilizing cracks.

Contribution

Introduces a 2D model for current sharing in superconductor-normal metal layers, comparing stabilizer configurations in YBCO-coated conductors.

Findings

Surround stabilizer is less effective than one-sided stabilizer when interface resistance is low.

The model helps optimize stabilizer design for superconducting conductors.

Effective stabilization depends on interface resistance and stabilizer configuration.

Abstract

A two-dimensional model is introduced that describes current sharing between the superconducting and normal metal layers in configuration typical of YBCO-coated conductors. The model is used to compare the effectiveness of surround stabilizer and more conventional one-sided stabilizer. When the resistance of the interface between the superconductor and stabilizer is low enough, the surround stabilizer is less effective than the one-sided stabilizer in stabilizing a hairline crack in the superconducting film.