Interference patterns of multifacet 20x(0-pi-) Josephson junctions with ferromagnetic barrier

Details Interference patterns of multifacet 20x(0-pi-) Josephson junctions with ferromagnetic barrier Interference patterns of multifacet 20x(0-pi-) Josephson junctions with ferromagnetic barrier

2010-03-16

arxiv.org/abs/1003.3216v1

Phys. Rev. B 81, 174535 (2010)

Physics

Condensed Matter

Superconductivity

submitted to PRB

Scientific paper

10.1103/PhysRevB.81.174535

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.

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