Asymmetric magnetic interference patterns in 0-pi Josephson junctions

Details Asymmetric magnetic interference patterns in 0-pi Josephson junctions Asymmetric magnetic interference patterns in 0-pi Josephson junctions

1997-11-17

arxiv.org/abs/cond-mat/9711157v1

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.80.2689

We examine the magnetic interference patterns of Josephson junctions with a region of 0- and of pi-phase shift. Such junctions have recently been realized as c-axis YBCO-Pb junctions with a single twin boundary in YBCO. We show that in general the junction generates self-fields which introduces an asymmetry in the critical current under reversal of the magnetic field. Numerical calculations of these asymmetries indicate they account well for the unexplained features observed in single twin boundary junctions.

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