Numerical studies of the superfluid Shapiro effect

Although simple theoretical descriptions of the Shapiro effect focus on a voltage biased superconducting Josephson junction, experimental measurements are predominantly made using current biased systems. In an analogous superfluid 3 He system, a Josephson weak link can be predominantly pressure bias...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2003-05, Vol.329, p.62-63
Main Authors: Simmonds, R.W., Marchenkov, A., Davis, J.C., Packard, R.E.
Format: Article
Language:English
Subjects:
Josephson effect
Shapiro effect
Superfluid
Weak links
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Summary:Although simple theoretical descriptions of the Shapiro effect focus on a voltage biased superconducting Josephson junction, experimental measurements are predominantly made using current biased systems. In an analogous superfluid 3 He system, a Josephson weak link can be predominantly pressure biased in accordance with the simple theory. Here, we use numerical methods to reproduce new features found in the observed “superfluid Shapiro effect”. We find the proper characteristics for a pressure biased system with new additional structure resulting from a non-zero source resistance.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(02)01921-X