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Bistability in superconducting rings containing an inhomogeneous Josephson junction

Gaass, M. and Nadj-Perge, S. and Radović, Z. and Bauer, A. and Aprili, M. and Wegscheider, W. and Strunk, C. (2008) Bistability in superconducting rings containing an inhomogeneous Josephson junction. Physical Review B, 77 (2). Art. No. 024506. ISSN 1098-0121. doi:10.1103/PhysRevB.77.024506.

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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.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Nadj-Perge, S.0000-0002-2916-360X
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.
Funding AgencyGrant Number
Deutsche Forschungsgemeinschaft (DFG)SFB 689
Serbian Ministry of Science141014
Franco-Serbian PAI EGIDE11049XG
Department of Energy (DOE)MA-509-MACA
Issue or Number:2
Classification Code:PACS: 85.25.Dq
Record Number:CaltechAUTHORS:20160112-142643730
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Official Citation:Bistability in superconducting rings containing an inhomogeneous Josephson junction M. Gaass, S. Nadj-Perge, Z. Radović, A. Bauer, M. Aprili, W. Wegscheider, and C. Strunk Phys. Rev. B 77, 024506 (2008) – Published 11 January 2008
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:63603
Deposited By: Ruth Sustaita
Deposited On:12 Jan 2016 22:57
Last Modified:10 Nov 2021 23:18

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