Published January 1, 2008
| Published
Journal Article
Open
Bistability in superconducting rings containing an inhomogeneous Josephson junction
Abstract
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 in the ferromagnetic section of the junction in these field intervals. The switching anomalies are induced by the coupling between the magnetic fluxes in the two superconducting loops.
Additional Information
© 2008 The American Physical Society. Received 26 October 2007; published 11 January 2008. We thank M. Reinwald for help with the preparation of the GaAs/AlGaAs heterostructures. This work has been supported by the German Science Foundation within SFB 689, the Serbian Ministry of Science under Project No. 141014, the Franco-Serbian PAI EGIDE under Project No. 11049XG, and U.S. DOE under Project No. MA-509-MACA.Attached Files
Published - PhysRevB.77.024506.pdf
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PhysRevB.77.024506.pdf
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Additional details
- Eprint ID
- 63603
- Resolver ID
- CaltechAUTHORS:20160112-142643730
- Deutsche Forschungsgemeinschaft (DFG)
- SFB 689
- Serbian Ministry of Science
- 141014
- Franco-Serbian PAI EGIDE
- 11049XG
- Department of Energy (DOE)
- MA-509-MACA
- Created
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2016-01-12Created from EPrint's datestamp field
- Updated
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2023-03-15Created from EPrint's last_modified field