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arXiv · 2104.07967

Current-induced self-organisation of mixed superconducting states

X. S. Brems·S. Mühlbauer·W. Y. Córdoba-Camacho·A. A. Shanenko·A. Vagov·R. Cubitt
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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 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 intermediate mixed state in low-$\kappa$ superconductors.

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X. S. Brems, S. Mühlbauer, W. Y. Córdoba-Camacho, A. A. Shanenko, A. Vagov, R. Cubitt. 2021-04-16. Current-induced self-organisation of mixed superconducting states. https://doi.org/10.1088/1361-6668/ac455e

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