Spontaneous Flux and Magnetic Interference Patterns in 0-pi Josephson Junctions
Superconductivity
2009-10-30 v1
Abstract
The spontaneous flux generation and magnetic field modulation of the critical current in a 0-pi Josephson junction are calculated for different ratios of the junction length to the Josephson penetration depth, and different ratios of the 0-junction length to the pi-junction length. These calculations apply to a Pb-YBCO c-axis oriented junction with one YBCO twin boundary, as well as other experimental systems. Measurements of such a junction can provide information on the nature of the c-axis Josephson coupling and the symmetry of the order parameter in YBCO. We find spontaneous flux even for very short symmetric 0-pi junctions, but asymmetric junctions have qualitatively different behavior.
Cite
@article{arxiv.cond-mat/9703067,
title = {Spontaneous Flux and Magnetic Interference Patterns in 0-pi Josephson Junctions},
author = {J. R. Kirtley and K. A. Moler and D. J. Scalapino},
journal= {arXiv preprint arXiv:cond-mat/9703067},
year = {2009}
}
Comments
13 pages, TEX,+ 7 figures, postscript