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-κ superconductors.
@article{arxiv.2104.07967,
title = {Current-induced self-organisation of mixed superconducting states},
author = {X. S. Brems and S. Mühlbauer and W. Y. Córdoba-Camacho and A. A. Shanenko and A. Vagov and R. Cubitt},
journal= {arXiv preprint arXiv:2104.07967},
year = {2022}
}