Three-dimensional Ginzburg-Landau simulation of a vortex line displaced by a zigzag of pinning spheres

Details Three-dimensional Ginzburg-Landau simulation of a vortex line displaced by a zigzag of pinning spheres Three-dimensional Ginzburg-Landau simulation of a vortex line displaced by a zigzag of pinning spheres

2005-03-30

arxiv.org/abs/cond-mat/0503691v1

Pramana - J. Phys., Vol. 66, No. 1, January 2006

Physics

Condensed Matter

Superconductivity

Submitted to special issue of Prammna-Journal of Physics devoted to the Vortex State Studies

Scientific paper

10.1007/BF02704958

A vortex line is shaped by a zigzag of pinning centers and we study here how far the stretched vortex line is able to follow this path. The pinning center is described by an insulating sphere of coherence length size such that in its surface the de Gennes boundary condition applies. We calculate the free energy density of this system in the framework of the Ginzburg-Landau theory and study the critical displacement beyond which the vortex line is detached from the pinning center.

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