Long-range vortex transfer in superconducting nanowires
Open Access
- 27 August 2019
- journal article
- research article
- Published by Springer Science and Business Media LLC in Scientific Reports
- Vol. 9 (1), 1-10
- https://doi.org/10.1038/s41598-019-48887-7
Abstract
Under high-enough values of perpendicularly-applied magnetic field and current, a type-II superconductor presents a finite resistance caused by the vortex motion driven by the Lorentz force. To recover the dissipation-free conduction state, strategies for minimizing vortex motion have been intensely studied in the last decades. However, the non-local vortex motion, arising in areas depleted of current, has been scarcely investigated despite its potential application for logic devices. Here, we propose a route to transfer vortices carried by non-local motion through long distances (up to 10 micrometers) in 50 nm-wide superconducting WC nanowires grown by Ga+ Focused Ion Beam Induced Deposition. A giant non-local electrical resistance of 36 Ω has been measured at 2 K in 3 μm-long nanowires, which is 40 times higher than signals reported for wider wires of other superconductors. This giant effect is accounted for by the existence of a strong edge confinement potential that hampers transversal vortex displacements, allowing the long-range coherent displacement of a single vortex row along the superconducting channel. Experimental results are in good agreement with numerical simulations of vortex dynamics based on the time-dependent Ginzburg-Landau equations. Our results pave the way for future developments on information technologies built upon single vortex manipulation in nano-superconductors.Keywords
This publication has 50 references indexed in Scilit:
- In situ tailoring of superconducting junctions via electro-annealingNanoscale, 2017
- Strong isotropic flux pinning in solution-derived YBa2Cu3O7−x nanocomposite superconductor filmsNature Materials, 2007
- High-Performance High- T c Superconducting WiresScience, 2006
- Vortex-Rectification Effects in Films with Periodic Asymmetric PinningPhysical Review Letters, 2005
- A Superconducting Reversible Rectifier That Controls the Motion of Magnetic Flux QuantaScience, 2003
- Experimentally realizable devices for controlling the motion of magnetic flux quanta in anisotropic superconductorsNature Materials, 2002
- Superconducting Fluxon Pumps and LensesPhysical Review Letters, 1999
- Flux Pinning in a Superconductor by an Array of Submicrometer Magnetic DotsPhysical Review Letters, 1997
- Stable vortex configurations in superconducting 2×2 antidot clustersApplied Physics Letters, 1997
- Vortex confinement by columnar defects in crystals: Enhanced pinning at high fields and temperaturesPhysical Review Letters, 1991