Abstract
We report large current enhancements inY Ba 2 Cu 3 O 7-σ with splayed columnar defects. An optimalrelative splay angle is Θ opt = 10° for the planar splay distribution. The vortex motion through gaussian splay appears to be controlled by the large-angle tails of the distribution. The regimes are observed where vortex motion isenhanced rather thansuppressed by splay.
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