118789 20230519145519.0 doi 10.1038/s41598-021-97075-z sideral 126395 ART-2021-126395 eng Orus, P (orcid)0000-0002-6087-7467 Critical current modulation induced by an electric field in superconducting tungsten-carbon nanowires 2021 Access copy available to the general public Unrestricted The critical current of a superconducting nanostructure can be suppressed by applying an electric field in its vicinity. This phenomenon is investigated throughout the fabrication and electrical characterization of superconducting tungsten-carbon (W-C) nanostructures grown by Ga+ focused ion beam induced deposition (FIBID). In a 45 nm-wide, 2.7 mu m-long W-C nanowire, an increasing side-gate voltage is found to progressively reduce the critical current of the device, down to a full suppression of the superconducting state below its critical temperature. This modulation is accounted for by the squeezing of the superconducting current by the electric field within a theoretical model based on the Ginzburg-Landau theory, in agreement with experimental data. Compared to electron beam lithography or sputtering, the single-step FIBID approach provides with enhanced patterning flexibility and yields nanodevices with figures of merit comparable to those retrieved in other superconducting materials, including Ti, Nb, and Al. Exhibiting a higher critical temperature than most of other superconductors, in which this phenomenon has been observed, as well as a reduced critical value of the gate voltage required to fully suppress superconductivity, W-C deposits are strong candidates for the fabrication of nanodevices based on the electric field-induced superconductivity modulation. info:eu-repo/grantAgreement/EUR/COST-Action/CA16218-Nanocohybri info:eu-repo/grantAgreement/ES/CSIC/PIE-202060E187 info:eu-repo/grantAgreement/ES/DGA-FEDER/E13-20R info:eu-repo/grantAgreement/EC/H2020/892427/EU/Focused Ion Beam fabrication of superconducting scanning Probes/FIBsuperProbes This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 892427-FIBsuperProbes info:eu-repo/grantAgreement/ES/MINECO/MAT2017-82970-C2-2-R info:eu-repo/grantAgreement/ES/MINECO/MAT2018-102627-T info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 4.997 2021 MULTIDISCIPLINARY SCIENCES 19 / 74 = 0.257 2021 Q2 T1 1.005 2021 Multidisciplinary 2021 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Fomin, VM De Teresa, JM Universidad de Zaragoza (orcid)0000-0001-9566-0738 Cordoba, R 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 11, 1 (2021), 17698 [9 pp.] Sci. rep. (Nat. Publ. Group) Scientific reports (Nature Publishing Group) 2045-2322 1676843 http://zaguan.unizar.es/record/118789/files/texto_completo.pdf Versión publicada 2578275 http://zaguan.unizar.es/record/118789/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:118789 articulos driver 2023-05-18-15:21:52 ARTICLE