2018/11/28 by P. M. Marychev, Marychev, P. M., D. Yu. Vodolazov +1
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #Superconductivity (cond-mat.supr-con) #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.1811.11546
7 pages, 8 figures
openalex publication_date 2018/11/28 · arxiv created 2018/12/06 · arxiv updated 2018/12/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Temperature induced transition of thin superconductor-ferromagnet-normal (S/F/N) metal hybrid structure to in-plane Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) state is accompanied by vanishing of effective inverse magnetic field penetration depth Λ-1 (Phys. Rev. Lett. 121, 077002 (2018)). Here we show that Λ-1 goes to zero only in limit of zero magnetic field H → 0 and at any finite parallel H or in-plane current I it is finite and positive in FFLO state which implies diamagnetic response. We demonstrate that Λ-1 has a nonmonotonic dependence on H and I not only in the parameter range corresponding to the FFLO phase domain but also in its vicinity. We find that for S/F/N/F/S structures with certain thicknesses of F layers there is temperature, current and magnetic field driven transition to and out of FFLO phase with a simultaneous jump of Λ-1.