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arXiv · 0712.4077

Threefold onset of vortex loops in superconductors with a magnetic core

Mauro M. Doria·Antonio R. de C. Romaguera·M. V. Milošević·F. M. Peeters
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Abstract

A magnetic inclusion inside a superconductor gives rise to a fascinating complex of {\it vortex loops}. Our calculations, done in the framework of the Ginzburg-Landau theory, reveal that {\it loops always nucleate in triplets} around the magnetic core. In a mesoscopic superconducting sphere, the final superconducting state is characterized by those confined vortex loops and the ones that eventually spring to the surface of the sphere, evolving into {\it vortex pairs} piercing through the sample surface.

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Mauro M. Doria, Antonio R. de C. Romaguera, M. V. Milošević, F. M. Peeters. 2007-12-25. Threefold onset of vortex loops in superconductors with a magnetic core. https://doi.org/10.1209/0295-5075/79/47006

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