Nonlinear and nonlocal Meissner effect in superconducting wires
J. Sánchez-Cañizares, J. Ferrer, F. Sols
DOI 10.1103/PhysRevB.63.134504 · Physical Review B
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Abstract
The structure of the Meissner effect in a current-carrying cylindrical wire with arbitrary disorder is studied following a numerical procedure that is exact within the quasiclassical approximation. A distribution of current is found that is nonmonotonous as a function of the radial coordinate. For high currents, a robust gapless superconducting state develops at the surface of both clean and dirty leads. Our calculation provides a quantitative theory of the critical current in realistic wires.
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