2004/11/29 by A. Pautrat, J. Scola, Ch. Simon +6 · 1 citation
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Organic and Molecular Conductors Research #Physics of Superconductivity and Magnetism #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.71.064517
accepted for publication in Phys. Rev. B
arxiv created 2004/11/29 · openalex publication_date 2005/02/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
Flux-line lattice (FLL) states have been studied using transport measurements and small-angle neutron scattering in low-Tc materials. In Pb\text\ensuremath-In, the bulk dislocations in the FLL do not influence the transport properties. In Fe-doped NbSe2, transport properties can differ after a field cooling (FC) or a zero field cooling (ZFC) procedure, as previously reported. The ZFC FLL is found ordered with narrow Bragg peaks and is linked to a linear V(I) curve and to a superficial critical current. The FC FLL pattern exhibits two Bragg peaks and the corresponding V(I) curve shows an S-shape. This can be explained by the coexistence of two ordered FLLs slightly tilted from the applied field direction by different superficial currents. These currents are wiped out when the transport current is increased.