Current percolation and the VI transition in YBa2Cu3O7 bicrystals and granular coated conductors
JE Evetts, MJ Hogg, BA Glowacki… - Superconductor …, 1999 - iopscience.iop.org
JE Evetts, MJ Hogg, BA Glowacki, NA Rutter, VN Tsaneva
Superconductor Science and Technology, 1999•iopscience.iop.orgThere is considerable interest in the dynamics of vortices in granularcoated conductors'
consisting of a 2D network of low angle grain boundaries (LAGBs). The VI 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 VI response for a particular grain-to-grain …
consisting of a 2D network of low angle grain boundaries (LAGBs). The VI 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 VI response for a particular grain-to-grain …
Abstract
There is considerable interest in the dynamics of vortices in granularcoated 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.
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