Paul J. Steinhardt, P. Chaudhari
Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
Paper
Symmetry of the superconducting order parameter in a YBa2Cu3O7-δ epitaxial films
Abstract
We propose a way to measure the interference associated with two superconductors with a dx2-y2 symmetry coupled by a Josephson weak link. An experimental realization shows no interference effects in a superconducting YBa2Cu3O7-δ film. The results are consistent with s-wave symmetry. © 1994 The American Physical Society.