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Current-induced self-organisation of mixed superconducting states
Superconductor Science and Technology. 2022. Vol. 35. No. 3. Article 035003.
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.
Language:
English
Keywords: самоорганизацияsuperconductivityсверхпроводимостьself-organizationтеория Гинзбурга-ЛандауGinzburg-Landau theoryniobiumниобийвихревая материяvortex mattersmall-angle neutron scatteringintermediate mixed stateмалоугловое нейтронное рассеяниепромежуточное смешанное состояние
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