Eur. Phys. J. B 59, 319-327 (2007)
https://doi.org/10.1140/epjb/e2007-00297-9

Effects of kinked linear defects on planar flux line arrays

Department of Physics, Harvard University, Cambridge, Massachusetts, 02138, USA

Corresponding author: ^a katifori@fas.harvard.edu

Received: 18 April 2007
Revised: 22 August 2007
Published online: 1 November 2007

Abstract

In the hard core limit, interacting vortices in planar type II superconductors can be modeled as non-interacting one dimensional fermions propagating in imaginary time. We use this analogy to derive analytical expressions for the probability density and imaginary current of vortex lines interacting with an isolated bent line defect and to understand the pinning properties of such systems. When there is an abrupt change of the direction of the pinning defect, we find a sinusoidal modulation of the vortex density in directions both parallel and perpendicular to the defect.