Stable vortex-antivortex molecules in mesoscopic superconducting triangles
V. R. Misko, V. M. Fomin, J. T. Devreese, V. V. Moshchalkov
Abstract
A thermodynamically stable vortex-antivortex pattern has been revealed in mesoscopic type I superconducting triangles, contrary to type II superconductors where similar patterns are unstable. The stable vortex-antivortex "molecule" appears due to the interplay between two factors: a repulsive vortex-antivortex interaction in type I superconductors and the vortex confinement in the triangle.
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