Fulde-Ferrell-Larkin-Ovchinnikov superconductors near a surface
arXiv:1807.05261 · doi:10.1103/PhysRevB.99.014503
Abstract
We show that the behaviour of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superconductors near a surface is considerably different from the usual case. The order parameter of the FF state is strongly deformed near the surface, which leads to a number of unusual features in the linear magnetic response, such as "anti-screening" or "over-screening" of the applied field. In a fully isotropic FF case, the Meissner effect is still present, despite the vanishing of the transverse superfluid density in the bulk. We also calculate the surface critical field Hc3, which exhibits a peculiar temperature dependence.
arXiv comment21 pages, 10 figures
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- Non-gapless excitation and zero-bias fast oscillations in the LDOS of surface superconducting states
- Fulde-Ferrell-Larkin-Ovchinnikov state in strongly correlated d-wave superconductors
- Paramagnetic Meissner, vortex and 'onion' ground states in Fulde-Ferrell finite-size superconductor