Structure of the mixed state in type II superconductors and its connection with Josephson effects in long superconducting bridges

The interaction energy between vortices and the structure of the vortex lattice in superconducting layers is calculated. It is shown that the one-dimensional vortex lattice (with vortices in the centre of the layer) is stable in a relatively large interval of magnetic fields above the flux penetration field. This result is true not only for very thin layers (with dimensions smaller than the penetration depth), but also for layers withd>. The results can be helpful at explaining some unusual experimental results on Josephson effects in long superconducting bridges.