Vortex-lattice structure in layered superconductors

Abstract

We show within the framework of the Lawrence-Doniach theory the possibility of the existence of a combined vortex lattice (one vortex lattice perpendicular and the other parallel to the conducting layers) for a field applied at an arbitrary angle with respect to the crystal axes of a layered superconductor. The phase diagrams are calculated to show the domains where different vortex lattice structures are stable.