Order and Creep in Flux Lattices and CDWs Pinned by Planar Defects

ORAL

Abstract

The influence of randomly distributed point impurities \emph{and} planar defects on the order and transport in type-II superconductors and related systems is considered theoretically. For random planar defects of identical orientation the flux line lattice exhibits a new glassy phase with diverging shear and tilt modulus, a transverse Meissner effect, large sample to sample fluctuations of longitudinal magnetic susceptibility and an exponential decay of translational long range order. The flux creep resistivity for currents $J$ parallel to the defects is $\rho(J)\sim \exp-(J_0/J)^{\mu}$ with $\mu=3/2$. Strong disorder enforces an array of dislocations to relax shear strain.

Authors

  • Aleksandra Petkovic

    • Institute of Theoretical Physics, University of Cologne, Z\"ulpicher Str. 77, 50937 K\"oln, Germany
  • Thomas Nattermann

    • Institute of Theoretical Physics, University of Cologne, Z\"ulpicher Str. 77, 50937 K\"oln, Germany