Fulde-Ferrell-Larkin-Ovchinnikov state in layered superconductors

✍ Scribed by H. Burkhardt; D. Rainer

• Publisher: John Wiley and Sons
• Year: 1994
• Tongue: English
• Weight: 793 KB
• Volume: 506
• Category: Article
• ISSN: 0003-3804
• DOI: 10.1002/andp.19945060305

✦ Synopsis

The phase diagram of a layered superconductor in a large parallel magnetic field is calculated. This includes a calculation of the lower critical field beyond which the superconductor is in the FFLO-state and possesses a spatially modulated order parameter and' spin polarization. The order parameter, spin polarization, free-energy density, and phase boundaries of this unconventional superconducting phase are evaluated numerically in the complete B-T plane. The analysis suggests that the transition at the lower critical field is of second order, and not of first order, as previously assumed. The order parameter of the FFLO-state merges continuously into the uniform superconducting state.