2016/05/31 by Aifeng Wang, Lijun Wu, V. N. Ivanovski +5 · 1 citation
Business, Management and Accounting · Materials Science · Mathematics · Physics and Astronomy · #Condensed matter physics #Corporate Taxation and Avoidance #Critical current #Geometry #Iron-based superconductors research #Materials science #Mathematics #Phase (matter) #Physics #Physics of Superconductivity and Magnetism #Pinning force #Quantum mechanics #Scaling #Superconductivity #Tetragonal crystal system #Thermodynamics #Vortex #cond-mat.mtrl-sci #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.94.094506
published as Phys. Rev. B 94, 094506 (2016) · 5 pages, 4 figures
openalex created_date 2016/06/24 · openalex publication_date 2016/09/07 · arxiv created 2016/09/12 · arxiv updated 2016/09/13 · openalex updated_date 2026/08/05
We report critical current density (Jc) in tetragonal FeS single crystals, similar to iron-based superconductors with much higher superconducting critical temperatures (Tc). The Jc is enhanced three times by 6% Se doping. We observe scaling of the normalized vortex pinning force as a function of reduced field at all temperatures. Vortex pinning in FeS and FeS0.94Se0.06 shows contribution of core-normal surfacelike pinning. Reduced temperature dependence of Jc indicates that dominant interaction of vortex cores and pinning centers is via scattering of charge carriers with reduced mean free path (\ensuremathδl), in contrast to KxFe_2\ensuremath-ySe2 where spatial variations in Tc (\ensuremathδTc) prevails.