Magnetic Field Effect in Josephson tunneling between d-Wave Superconductors
Abstract
The magnetic field effect in the Josephson tunneling between two d-wave superconductors are investigated. When the crystal orientation of one (or each) superconductor relative to the interface normal is such that midgap states exist at the interface, there is a component of the tunneling current due to the midgap states. For a junction with a flat {001}|{110} or {100}|{110} interface, this component is the predominant contribution to the current. The predicted current-field dependence differs entirely from the conventional Fraunhofer pattern, in agreement with a published measurement. This is because, apart from the Fraunhofer factor, the critical current depends on the magnetic field B through the current density also which is a linear function of B for weak B.
Keywords
Cite
@article{arxiv.cond-mat/9902359,
title = {Magnetic Field Effect in Josephson tunneling between d-Wave Superconductors},
author = {X. -Z. Yan and C. -R. Hu},
journal= {arXiv preprint arXiv:cond-mat/9902359},
year = {2009}
}
Comments
5 pages, 2 figures