STRUCTURE OF FLUX-LINE LATTICES IN TILT MAGNETIC-FIELDS OF ANISOTROPIC SUPERCONDUCTORS

We study here, by the minimization of the total energy of flux line sy stems, the zero temperature structure of flux Lines of uniaxial anisot ropic superconductors in a tilt magnetic field. The anisotropic London model is used and an efficient method is developed to make the total energy calculation manageable. Two degenerate structures are found, on e is a deformed triangular structure and the other is a superlattice w ith three lines per unit cell.