Journal article
Magnetic field dependence of microwave radiation in intermediate-length Josephson junctions
Department of Informatics and Mathematical Modeling, Technical University of Denmark1
Technical University of Denmark2
Applied functional analysis, Department of Mathematics, Technical University of Denmark3
Department of Mathematics, Technical University of Denmark4
Department of Physics, Technical University of Denmark5
Biophysics and Fluids, Department of Physics, Technical University of Denmark6
Experimental measurements of current-voltage structure and emitted X-band radiation in applied magnetic field from overlap-geometry Josephson tunnel junctions of normalized length about 2 are compared with numerical simulations obtained with the use of a perturbed sine-Gordon model. The simulations furnish the current and field dependence of the oscillation configuration, from which can be calculated average voltages, frequencies, and power spectra.
Simulation and experimental results are in good agreement with regard to the lobe structure of the height of the first zero-field step and/or second Fiske step in magnetic field and the field dependence of the radiation frequency within the various lobes, including details such as hysteresis between lobes.
The simulations predict an alternation of the dominant frequency component with increasing field that accounts well for the experimental observations. The usefulness and limitations of cavity-mode analyses, both singlemode and multimode, are evidenced by comparison with the simulation results.
Language: | English |
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Year: | 1984 |
Pages: | 2640-2648 |
ISSN: | 1550235x , 10980121 , 24699950 , 10953795 and 01631829 |
Types: | Journal article |
DOI: | 10.1103/PhysRevB.30.2640 |
ORCIDs: | Sørensen, Mads Peter , Christiansen, Peter Leth , Monaco, Roberto and Mygind, Jesper |