https://doi.org/10.1140/epjp/s13360-025-06797-w
Regular Article
Non-Fraunhofer current driven phase dynamics and voltage characteristics in Josephson junction ladder
Department of Physics, Jadavpur University, 700032, Kolkata, India
a
ajayk.ghosh@jadavpuruniversity.in
Received:
9
May
2025
Accepted:
27
August
2025
Published online:
5
September
2025
Numerically, the variation of voltage drop (V) and phase fluctuations 
in a Josephson junction ladder (JJL) has been studied as a result of an external modulated currents I(i, t) using random field XY model (RFXY). A disordered random magnetic field is introduced in a JJL. Asymmetry in the non-Fraunhofer current–voltage curve is obtained for different sizes of system and fields. Phase fluctuation, , increases with the increase of amplitude of external current, 
. Increasing the pinning strength, W, a saturation in V is possible for several constant .
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
