Vortex dynamics in Josephson ladders with π-junctions

Both experimental and numerical studies of a self-frustrated triangular array of pi-junctions are reported. The array of SFS Josephson junctions shows a transition to the pi-state and self-frustration with a decrease in temperature. This manifests itself in a half-period shift of the bias critical c...

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Published inSuperconductor science & technology Vol. 17; no. 5; pp. S355 - S358
Main Authors Kornev, V K, Klenov, N V, Oboznov, V A, Feofanov, A K, Bol’ginov, V V, Ryazanov, V V, Pedersen, N F
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.05.2004
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Summary:Both experimental and numerical studies of a self-frustrated triangular array of pi-junctions are reported. The array of SFS Josephson junctions shows a transition to the pi-state and self-frustration with a decrease in temperature. This manifests itself in a half-period shift of the bias critical current versus applied magnetic field. At temperatures close to the 0-pi transition this dependence shows a doubling of its periodicity frequency that can be explained by 0-pi bistability of the SFS junctions. The change in the array behaviour with number of unit cells has been studied by means of numerical simulation.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0953-2048
1361-6668
DOI:10.1088/0953-2048/17/5/053