Structure of the vortex lattice in the Fulde-Ferrell-Larkin-Ovchinnikov state - art. no. 184521

In clean superconductors under a high magnetic field, when the upper critic al field is determined by both orbital and paramagnetic effects, new soluti ons for the superconducting order parameter, with additional modulation of the vortex lattice along the field, must be realized. They correspond to th e Fulde-Ferrell-Larkin-Ovchinnikov effect. In order to determine the struct ure of the vortex lattice in the new phases, we derive a modified Ginzburg- Landau functional in the high-re limit, and we determine the corresponding phase diagram.