The vortex structure in high-T c superconductors is investigated on the basis of the anisotropic structures of these materials. An analysis is developed in order to determine the GinzburgLandau expression of the free energy for the layered structure. The two cases ofξ(T)≫d andɛ(T)≪d corresponding to the existence of Abrikosov and Josephson vortex types are discussed.
Key WordsLayered superconductors vortices
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