Internal resonances in periodically modulated long Josephson junctions

Author

Larsen, B.H. ; Mygind, J. ; Ustinov, A.V.

Author_Institution

Dept. of Phys., Tech. Univ. Denmark, Lyngby, Denmark

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

2947

Lastpage

2950

Abstract

Current-voltage (I-V) characteristics of long Josephson junctions with a periodic lattice of localized inhomogeneities are studied. The interaction between the moving fluxons and the inhomogeneities causes resonant steps in the IV-curve. Some of these steps are due to a synchronization to resonant Fiske modes in the sub-junctions formed between the inhomogeneities. The voltage positions of the resonant steps oscillate as function of the applied magnetic field with a period corresponding to the inclusion of one magnetic flux quantum, /spl Phi//sub 0/=h/2e, per sub-junction. A qualitative explanation that takes into account the interaction between the resonance in the sub-junction and the magnetic flux density waves excited in the whole junction is given.<>

Keywords

Josephson effect; Fiske modes; current-voltage characteristics; fluxons; internal resonances; localized inhomogeneities; long Josephson junctions; magnetic field; periodic lattice; sub-junctions; synchronization; voltage steps; Critical current density; Equations; Frequency synchronization; Josephson junctions; Lattices; Magnetic fields; Magnetic flux; Magnetic resonance; Oscillators; Physics;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.403210

Filename

403210