There is considerable interest in the dynamics of vortices in granular `coated conductors' consisting of a 2D network of low angle grain boundaries (LAGBs). The V - I characteristic of the conductor is determined by a combination of flux vortex channelling along the grain boundaries and current percolation within the grain network. In this work it is shown that measurements of viscous flow for a YBa 2 Cu 3 O 7 bicrystal LAGB can be applied in a statistical model that predicts the characteristic V - I response for a particular grain-to-grain dispersion of grain boundary angles.
No takes yet. Share an insight, caveat, or question.
Evetts et al. (1999) studied this question.