Theory of the Josephson effect in superconductor / ferromagnet / superconductor junctions
Superconductivity
2007-05-23 v3
Abstract
To reveal the influence of the exchange interaction on the Josephson effect, the d.c. Josephson current in unconventional-superconductor / ferromagnet / unconventional-superconductor junctions is studied. When the two superconductors have d-wave symmetry, the Josephson current is drastically suppressed with the increase of the exchange interaction. On the other hand, when the two superconductors have different parities, e.g. s-wave and p-wave, an enhancement of the Josephson current is obtained with the increment of the exchange interaction due to the break-down of SU(2) symmetry in the spin space.
Cite
@article{arxiv.cond-mat/9903034,
title = {Theory of the Josephson effect in superconductor / ferromagnet / superconductor junctions},
author = {Y. Tanaka and S. Kashiwaya},
journal= {arXiv preprint arXiv:cond-mat/9903034},
year = {2007}
}
Comments
8 pages and 4 figures (Mistakes in uploading process are corrected on March 9, 1999)