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Analysis of magnetic field patterns of single Josephson tunnel junctions with large idle regions

  • Multilayer Junctions and Arrays
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Abstract

We have experimentally investigated the effect of a combined lateral and longitudinal idle region on the magnetic field dependence of the critical current of Nb/Al−AlOx/Nb Josephson junctions. All the samples were high quality devices with a good uniformity and reproducibility of the electrical parameters. An excellent agreement has been found with calculations of the magnetic field patterns made using a simple model of junction with idle region. A comparison with the magnetic field response of the same devices after a proper trimming of the idle region has also been done.

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Authors and Affiliations

  1. Istituto Elettrotecnico Nazionale “G. Ferraris”, I-10135, Torino, Italy

    S. Maggi & V. Lacquaniti

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  1. S. Maggi
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  2. V. Lacquaniti
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Maggi, S., Lacquaniti, V. Analysis of magnetic field patterns of single Josephson tunnel junctions with large idle regions. J Low Temp Phys 106, 393–398 (1997). https://doi.org/10.1007/BF02399644

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  • DOI: https://doi.org/10.1007/BF02399644

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