Josephson vortex

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• Josephson vortex — 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… …   Wikipedia

• Long Josephson junction — In superconductivity, a long Josephson junction (LJJ) is a Josephson junction which has one or more dimensions longer than the Josephson penetration depth lambda J. This definition is not strict.In terms of underlying model a short Josephson… …   Wikipedia

• Quantum vortex — In physics, a quantum vortex is a topological defect exhibited in superfluids and superconductors. The existence of these quantum vortices were independently predicted by Richard Feynman and Alexei Alexeyevich Abrikosov in the 1950s. They were… …   Wikipedia

• Fractional vortices — In a standard superconductor, described by a complex field |Psi|e^{iphi} (condensates wave function), vortices carry quantized magnetic field: a consequence of 2pi invariance of the phase phi of the condensate wave function |Psi|e^{iphi}. There a …   Wikipedia

• Fluxon — In physics, a fluxon is a quantum of electromagnetic flux. The term may have any of several related meanings. Superconductivity In the context of superconductivity, a fluxon (aka Abrikosov vortex) is a small whisker of normal phase surrounded by… …   Wikipedia

• Lockin effect — In superconductivity, the Lockin Effect refers to the preference of vortex phases to be positioned at certain points within cells of a crystal lattice of an organic superconductor.References [http://riken.nd.rl.ac.uk/ral/symposium2004/pdfs/Francis… …   Wikipedia

• SUPRACONDUCTIVITÉ — La résistance électrique de certains conducteurs devient brutalement inférieure à toute valeur mesurable au dessous d’une certaine température T c dite température critique . On dit qu’il y a transition du conducteur de l’état normal (noté N) à… …   Encyclopédie Universelle

• Superconductivity — is a phenomenon occurring in certain materials generally at very low temperatures, characterized by exactly zero electrical resistance and the exclusion of the interior magnetic field (the Meissner effect).The electrical resistivity of a metallic …   Wikipedia

• Semifluxon — In superconductivity, a Semifluxon is a vortex of supercurrent carrying the magnetic flux equal to the half of the magnetic flux quantum. Semifluxons exist in the so called 0 π long Josephson junctions at the boundary between 0 and π regions. For …   Wikipedia

• Supraconductivité — Aimant en lévitation magnétique au dessus d un supraconducteur à haute température critique. L expulsion du champ magnétique du matériau supraconducteur (effet Meissner) est responsable de cet effet de lévitation. La supraconductivité (ou… …   Wikipédia en Français

• Condensat De Bose-Einstein — Pour les articles homonymes, voir Einstein (homonymie). Un condensat de Bose Einstein est un état de la matière formé de bosons à une température suffisamment basse, caractérisé par une fraction macroscopique d atomes dans l état quantique de… …   Wikipédia en Français