Fluxon dynamics in discrete Josephson transmission lines with stacked junctions

The experimental and numerical study of parallel one-dimensional arrays consisting of double-layer stacked small Josephson tunnel junctions is reported. In addition to several features already known for classic single-layer arrays, we find a new resonant state which corresponds to the locking of the...

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Bibliographic Details
Published inJournal of applied physics Vol. 81; no. 1; pp. 309 - 314
Main Authors Caputo, P., Darula, M., Ustinov, A. V., Kohlstedt, H.
Format Journal Article
LanguageEnglish
Published 01.01.1997
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Summary:The experimental and numerical study of parallel one-dimensional arrays consisting of double-layer stacked small Josephson tunnel junctions is reported. In addition to several features already known for classic single-layer arrays, we find a new resonant state which corresponds to the locking of the fluxon oscillations to a frequency of small-amplitude oscillations of the superconducting phase in middle islands of small stacks. Numerical simulations of a simplified circuit agree well with experiments and confirm the suggested qualitative mechanism. In these experiments we find no indication for the so-called multiple-fluxon propagation in double-junction arrays.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.364110