GLASS PHASES OF FLUX LATTICES IN LAYERED SUPERCONDUCTORS

We study a flux lattice which is parallel to superconducting layers, a llowing for dislocations and for disorder of both short wavelength and long wavelength. We find that the long-wavelength disorder of strengt h <(Delta)over tilde> has a significant effect on the phase diagram -i t produces a first-order transition within the Bragg glass phase and l eads to melting at strong <(Delta)over tilde>. This then allows a Frie del scenario of 2D superconductivity.