Energy dependence of a vortex line length near a zigzag of pinning centers
arXiv:cond-mat/0411046
Abstract
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 , the pinning centers are insulating spheres of radius , taken within the range to , being the coherence length. We calculate the free energy density of these systems in the framework of the Ginzburg-Landau theory.
Submitted to Braz. Jour. Phys. (http://www.sbfisica.org.br/bjp) 11 pages, 6 figures, 1 table, LaTex 2e