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206:. It has been shown that under certain conditions a propagating Josephson vortex can initiate another Josephson vortex. This effect is called flux cloning (or fluxon cloning). Although a second vortex appears, this does not violate the conservation of the single flux quantum.
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Hess, H. F.; Robinson, R. B.; Dynes, R. C.; Valles, J. M.; Waszczak, J. V. (1989-01-09). "Scanning-Tunneling-Microscope
Observation of the Abrikosov Flux Lattice and the Density of States near and inside a Fluxoid".
162:, the size of the Josephson ones is not defined by microscopic parameters only. Rather, it depends on supercurrents circulating in superconducting electrodes, applied magnetic field etc. In
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are characterized by cores in which the correlations are suppressed by destructive quantum interference and the normal state is recovered. However, unlike
Abrikosov cores, having a size ~
144:(typically 5-100 nm) . The cores of Josephson vortices are more complex and depend on the physical nature of the barrier. In Superconductor-Normal Metal-Superconductor (SNS)
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or in junctions in which superconducting phase discontinuities are present. It was demonstrated by
Hilgenkamp et al. that Josephson vortices in the so-called
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Roditchev, Dimitri; Brun, Christophe; Serrier-Garcia, Lise; Cuevas, Juan Carlos; Bessa, Vagner
Henrique Loiola; et al. (2015-02-23).
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from the two neighbouring superconducting electrodes. Similarly to
Abrikosov vortices in superconductors, Josephson vortices in SNS
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Usually the
Josephson vortex's supercurrent loops create a magnetic flux which equals, in long enough Josephson junctions, to Ξ¦
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H. Hilgenkamp, Ariando, H.-J. H. Smilde, D. H. A. Blank, G. Rijnders, H. Rogalla, J. R. Kirtley and C. C. Tsuei (2003).
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the cores are not expected to have a specific spectral signature; they were not observed.
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D. R. Gulevich; F. V. Kusmartsev (2006). "Flux
Cloning in Josephson Transmission Lines".
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there exist measurable superconducting correlations induced in the N-barrier by
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314:"Direct observation of Josephson vortex cores"
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263:Physical Review Letters
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61:more precise citations.
241:Sine-Gordon equation
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