The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase in the vortex lattice state is quantitatively studied using the self-consistent Eilenberger theory in three-dimensional (3D) space. We estimate free energy to determine the FFLO phase diagram in the H-T plane and stable FFLO wave number in the isotropic system with the 3D Fermi sphere and s-wave pairing. To facilitate the experimental identification of the FFLO state, we investigate the field evolution of NMR spectra and flux line lattice form factors obtained in neutron scattering in the FFLO vortex states. Possible applications of our results to experimental data on CeCoIn 5 are mentioned.
- Fulde-Ferrell-Larkin-Ovchinnikov state
- Heavy-fermion superconductors
- Quasi-classical Eilenberger theory
- Vortex state
ASJC Scopus subject areas
- Physics and Astronomy(all)