NDLI: Mutual phase-locking of fluxons in stacked long Josephson junctions: simulations and experiments

Content Provider	IEEE Xplore Digital Library
Author	Carapella, G. Costabile, G. Filatrella, G. Manscher, M.H. Mygind, J. Nordahn, M.A. Pedersen, N.F. Petraglia, A.
Copyright Year	2002
Abstract	We report on the experimental observation of reciprocal phase-locking in stacked Nb-AlO/sub x/-Nb Josephson junctions having overlap geometry. When the junctions are independently biased in zero external magnetic field, they each exhibit several Zero Field Steps. Biasing both the junctions on the Zero Field Steps, one with constant current while the other is swept along the step, we have observed phase-locking between the fluxons in the two junctions and measured the phase-locking range. We have found that the bound state can be very stable, and that the stack exhibits the same features reversing either the polarity of the bias current or the role of the junctions. An analogous investigation of the effect of the magnetic field on the stability of the bound state has been performed. Numerical simulations have shown that the underlying dynamics corresponding to this situation is a bound state of a fluxon-antifluxon pair. Finally, the effect of rf radiation on the junctions has been investigated.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	2411
Ending Page	2414
Page Count	4
File Size	410702
File Format	PDF
ISSN	10518223
Volume Number	7
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Josephson junctions Electrodes Magnetic field measurement Niobium Physics Nonlinear equations Nonlinear dynamical systems Current measurement Phase measurement Stability
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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