Long-range vortex transfer in superconducting nanowires

Córdoba, Rosa ; Orús, Pablo ; Jelic, Željk L. ; Sesé, Javier (Universidad de Zaragoza) ; Ibarra, Manuel Ricardo (Universidad de Zaragoza) ; Guillamón, Isabel ; Vieira, Sebastián ; Palacios, Juan José ; Suderow, Hermann ; Milosevic, Milorad V. ; De Teresa, José María (Universidad de Zaragoza)

Resumen: 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 O 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.

Idioma: Inglés

DOI: 10.1038/s41598-019-48887-7

Año: 2019

Publicado en: Scientific Reports 9, 1 (2019), 12386 [10 pp.]
ISSN: 2045-2322

Factor impacto JCR: 3.998 (2019)

Categ. JCR: MULTIDISCIPLINARY SCIENCES rank: 17 / 71 = 0.239 (2019) - Q1 - T1

Factor impacto SCIMAGO: 1.341 - Multidisciplinary (Q1)

Financiación: info:eu-repo/grantAgreement/ES/CSIC/PIE-201760E027
Financiación: info:eu-repo/grantAgreement/ES/DGA/E13-17R
Financiación: info:eu-repo/grantAgreement/ES/DGA-FEDER/E28-17R
Financiación: info:eu-repo/grantAgreement/EC/H2020/679080/EU/Using extreme magnetic field microscopy to visualize correlated electron materials/PNICTEYES
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2015-69725-REDT
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2016-80434-P
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2017-84330-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/Juan de la Cierva Program
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2017-82970-C2-1-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2017-82970-C2-2-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MDM-2014-0377

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)