The Fulde–Ferrell–Larkin–Ovchinnikov State in Pnictides

2013/03/05 by Andrzej Ptok, Dawid Crivelli
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1007/s10909-013-0871-0

published as Journal of Low Temperature Physics 172, 226 (2013) · 8 pages, 4 figures Journal of Low Temperature Physics, (2013)

openalex publication_date 2013/03/05 · arxiv created 2013/04/08 · arxiv updated 2013/11/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Fe-based superconductors (FeSC) exhibit all the properties of systems that allow the formation of a superconducting phase with oscillating order parameter, called the Fulde–Ferrell–Larkin–Ovchinnikov (FFLO) phase. By the analysis of the Cooper pair susceptibility in two-band FeSC, such systems are shown to support the existence of a FFLO phase, regardless of the exhibited order parameter symmetry. We also show the state with nonzero Cooper pair momentum, in superconducting FeSC with ∼cos(k x )⋅cos(k y ) symmetry, to be the ground state of the system in a certain parameter range.

Citations

• Multiband magnetism and superconductivity in Fe-based compounds
• Texture in the Superconducting Order Parameter ofCeCoIn5Revealed by Nuclear Magnetic Resonance
• The Fulde–Ferrell–Larkin–Ovchinnikov phase in the presence of pair hopping interaction
• Observation of Fermi-surface–dependent nodeless superconducting gaps in Ba 0.6 K 0.4 Fe 2 As 2