Topological transitions in ac/dc-driven superconductor nanotubes

Extending of nanostructures into the third dimension has become a major research avenue in condensed-matter physics, because of geometry- and topology-induced phenomena. In this regard, superconductor 3D nanoarchitectures feature magnetic field inhomogeneity, non-trivial topology of Meissner current...

Full description

Saved in:
Bibliographic Details
Published in:Scientific reports 2022-06, Vol.12 (1), p.10069-10069, Article 10069
Main Authors: Fomin, Vladimir M., Rezaev, Roman O., Dobrovolskiy, Oleksandr V.
Format: Article
Language:English
Subjects:
639/766
639/925
Coexistence
Humanities and Social Sciences
Magnetic fields
multidisciplinary
Nanotechnology
Nanotubes
Science
Science (multidisciplinary)
Topology
Voltage
Vortices
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Extending of nanostructures into the third dimension has become a major research avenue in condensed-matter physics, because of geometry- and topology-induced phenomena. In this regard, superconductor 3D nanoarchitectures feature magnetic field inhomogeneity, non-trivial topology of Meissner currents and complex dynamics of topological defects. Here, we investigate theoretically topological transitions in the dynamics of vortices and slips of the phase of the order parameter in open superconductor nanotubes under a modulated transport current. Relying upon the time-dependent Ginzburg–Landau equation, we reveal two distinct voltage regimes when (i) a dominant part of the tube is in either the normal or superconducting state and (ii) a complex interplay between vortices, phase-slip regions and screening currents determines a rich FFT voltage spectrum. Our findings unveil novel dynamical states in superconductor open nanotubes, such as paraxial and azimuthal phase-slip regions, their branching and coexistence with vortices, and allow for control of these states by superimposed dc and ac current stimuli.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-022-13543-0