Bistability in superconducting rings containing an inhomogeneous Josephson junction
@article{Gaass2008BistabilityIS, title={Bistability in superconducting rings containing an inhomogeneous Josephson junction}, author={Markus Gaass and Stevan Nadj-Perge and Z. Radovi'c and Andreas Bauer and M Aprili and Werner Wegscheider and Christoph Strunk}, journal={Physical Review B}, year={2008}, volume={77}, pages={024506} }
We investigate the magnetic response of a superconducting Nb ring containing a ferromagnetic PdNi Josephson junction and a tunnel junction in parallel. Doubling of the switching frequency is observed within certain intervals of the external magnetic field. For sinusoidal current-phase relations in both junctions, our model of a double superconducting quantum interference device (a small two-junction loop that interrupts the larger ring) explains this feature by a sequence of current reversals…
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