Topological transitions in superconductor nanomembranes under a strong transport current

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Date
2020
Volume
3
Issue
Journal
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Book Title
Publisher
Washington, D.C. : American Association for the Advancement of Science
Abstract

The topological defects, vortices in bulk superconductors (SCs) and phase slips in low-dimensional SCs are known to lead to the occurrence of a finite resistance. We report on a topological transition between the both types of topological defects under a strong transport current in an open SC nanotube with a submicron-scale inhomogeneity of the normal-to-the-surface component of the applied magnetic field. When the magnetic field is orthogonal to the axis of the nanotube, which carries the transport current in the azimuthal direction, the phase-slip regime is characterized by the vortex/antivortex lifetime ∼ 10−14 s versus the vortex lifetime ∼ 10−11 s for vortex chains in the half-tubes, and the induced voltage shows a pulse as a function of the magnetic field. The topological transition between the vortex-chain and phase-slip regimes determines the magnetic-field–voltage and current–voltage characteristics of curved SC nanomembranes to pursue high-performance applications in advanced electronics and quantum computing.

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Keywords
topological defects, superconductors (SCs), topological transition
Citation
Rezaev, R. O., Smirnova, E. I., Schmidt, O. G., & Fomin, M. (2020). Topological transitions in superconductor nanomembranes under a strong transport current. 3. https://doi.org//10.1038/s42005-020-00411-4
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License
CC BY 4.0 Unported