Interference patterns of multifacet 20x(0-pi-) Josephson junctions with ferromagnetic barrier
arXiv:1003.3216 · doi:10.1103/PhysRevB.81.174535
Abstract
We have realized multifacet Josephson junctions with periodically alternating critical current density (MJJs) using superconductor-insulator-ferromagnet-superconductor heterostructures. We show that anomalous features of critical current vs. applied magnetic field, observed also for other types of MJJs, are caused by a non-uniform flux density (parallel to the barrier) resulting from screening currents in the electrodes in the presence of a (parasitic) off-plane field component.
submitted to PRB