Plastic energies in layered superconductors

Details Plastic energies in layered superconductors Plastic energies in layered superconductors

1995-03-08

arxiv.org/abs/cond-mat/9503043v1

Physics

Condensed Matter

5 Pages Revtex, 4 uuencoded postscript figures

Scientific paper

10.1103/PhysRevB.52.3095

We estimate the energy cost associated with two pancake vortices colliding in a layered superconductor. It is argued that this energy sets the plastics energy scale and is the analogue of the crossing energy for vortices in the continuum case. The starting point of the calculation is the Lawrence-Doniach version of the Ginzburg-Landau free energy for type-II superconductors. The magnetic fields considered are along the c-direction and assumed to be sufficiently high that the lowest Landau level approximation is valid. For Bi-2212, where it is know that layering is very important, the results are radically different from what would have been obtained using a three-dimensional anisotropic continuum model. We then use the plastic energy for Bi-2212 to successfully explain recent results from Hellerqvist {\em et al.}\ on its longitudinal resistance.

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