Current-induced self-organisation of mixed superconducting states. (20th January 2022)

• Record Type: Journal Article
• Authors: Brems, Xaver S; Mühlbauer, Sebastian; Córdoba-Camacho, Wilmer Y; Shanenko, Arkady A; Vagov, Alexei; Albino Aguiar, José; Cubitt, Robert
• Is Part Of: Superconductor science & technology. Volume 35:Number 3(2022)
• Publication Date: 2022-01-20
• Subjects: superconductivity -- vortex matter -- time-dependent Ginzburg-Landau theory -- self-organisation -- small-angle neutron scattering -- intermediate mixed state -- niobium; Superconductivity -- Periodicals; Superconductors -- Periodicals; 537.623
• DOI: 10.1088/1361-6668/ac455e
• Languages: English
• ISSNs: 0953-2048

Abstract

Abstract: Small-angle neutron scattering is used in combination with transport measurements to investigate the current-induced effects on the morphology of the intermediate mixed state (IMS) domains in the intertype superconductor niobium. We report the robust self-organisation of the vortex lattice domains to elongated parallel stripes perpendicular to the applied current in a steady-state. The experimental results for the formation of the superstructure are supported by theoretical calculations, which highlight important details of the vortex matter evolution. The investigation demonstrates a mechanism of a spontaneous pattern formation that is closely related to the universal physics governing the IMS in low- κ superconductors.