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In superconductivity, a Josephson vortex is a vortex of supercurrent in a long Josephson junction (LJJ). The supercurrents circulate around the vortex center which is situated inside the Josephson barrier. Opposite to Abrikosov vortices in type-II superconductors, Josephson vortex has no normal core.
Additional recommended knowledge
Usually the Josephson vortex's supercurrents create magnetic field with the total flux equal to Φ0 --- a single flux quantum. Such vortex is therefore called a (Josephson) fluxon. Recently it was demonstrated by Hilgenkamp et al. that Josephson vortices in the so-called 0-π LJJ can also carry half of the flux quantum, and are called semifluxons.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Josephson_vortex". A list of authors is available in Wikipedia.|