Energy dependence of a vortex line length near a zigzag of pinning centers

Details Energy dependence of a vortex line length near a zigzag of pinning centers Energy dependence of a vortex line length near a zigzag of pinning centers

2004-11-01

arxiv.org/abs/cond-mat/0411046v1

Brazilian J. Phys. 35(1), 157 - 161, 2005

Physics

Condensed Matter

Superconductivity

Submitted to Braz. Jour. Phys. (http://www.sbfisica.org.br/bjp) 11 pages, 6 figures, 1 table, LaTex 2e

Scientific paper

A vortex line, shaped by a zigzag of pinning centers, is described here through a three-dimensional unit cell containing two pinning centers positioned symmetrically with respect to its center. The unit cell is a cube of side $L=12\xi$, the pinning centers are insulating spheres of radius $R$, taken within the range $0.2\xi$ to $3.0\xi$, $\xi$ being the coherence length. We calculate the free energy density of these systems in the framework of the Ginzburg-Landau theory.

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