Journal article
Fluxon dynamics in three stacked Josephson junctions
Department of Mathematics, Technical University of Denmark1
Department of Informatics and Mathematical Modeling, Technical University of Denmark2
University of the Basque Country3
Electric Components, Department of Electrical Engineering, Technical University of Denmark4
Department of Electrical Engineering, Technical University of Denmark5
The motion of fluxons of the same polarity in three vertically stacked Josephson junctions is studied. In this configuration the difference between exterior and interior junctions plays a more important role than in other configurations with several interior junctions. Below the Swihart velocity c/sub -/, the coupling between junctions leads to a repulsion of the fluxons with the same polarity.
Above this critical velocity a fluxon will induce radiation in the neighboring junctions, leading to a bunching of the fluxons in the stacked junctions. Using the Sakai-Bodin-Pedersen model, three coupled perturbed sine-Gordon equations are numerically studied for different values of coupling, damping, and bias parameters.
In a narrow range of velocities bunching occurs. Outside this interval the fluxons split and new fluxons may be created. I-V characteristics are presented
Language: | English |
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Year: | 2002 |
ISSN: | 1550235x , 10980121 , 01631829 and 10953795 |
Types: | Journal article |
DOI: | 10.1103/PhysRevB.66.172503 |
ORCIDs: | Christiansen, Peter Leth and Sørensen, Mads Peter |