Critical vortex line length near a zigzag of pinning centers

2004/09/22 by Antonio R. de C. Romaguera, Mauro M. Doria, Mauro M. Dória
Engineering · Physics and Astronomy · #Magnetic confinement fusion research #Physics of Superconductivity and Magnetism #Superconducting Materials and Applications #cond-mat.supr-con

paper · pdf · doi:10.1140/epjb/e2004-00352-1

published as Eur. Phys. J. B 42, 3--10 (2004) · 8 pages, 25 figures with low resolution option, 1 table. To be published in Eur. Phys. Jour. B

arxiv created 2004/09/22 · openalex publication_date 2004/11/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

A vortex line passes through as many pinning centers as possible on its way from one extremety of the superconductor to the other at the expense of increasing its self-energy. In the framework of the Ginzburg-Landau theory we study the relative growth in length, with respect to the straight line, of a vortex near a zigzag of defects. The defects are insulating pinning spheres that form a three-dimensional cubic array embedded in the superconductor. We determine the depinning transition beyond which the vortex line no longer follows the critical zigzag path of defects.

Citations

• Transition to a superconductor with insulating cavities

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