Three-Dimensional Superconducting Nanohelices Grown by He+-Focused-Ion-Beam Direct Writing
EntityUAM. Departamento de Física de la Materia Condensada
PublisherAmerican Chemical Society
10.1021/acs.nanolett.9b03153Nano Letters 19.12 (2019): 8597-8604
Funded byThis work was supported by the financial support from Spanish Ministry of Economy and Competitiveness through the projects MAT2017-82970-C2-2-R, PIE201760E027, including FEDER funding, FIS2017-84330-R, MDM-2014-0377, EU ERC (grant agreement no. 679080), COST grant no. CA16128, and STSM grant 41199 for V.M.F. from COST Action CA16218, from the EU-H2020 research and innovation programme under grant agreement no. 654360 NFFA-Europe, from regional Gobierno de Aragón (grants E13_17R) with European Social Fund (Construyendo Europa desde Aragón) and Comunidad de Madrid through project Nanofrontmag-CM (grant no. S2013/MIT-2850). Authors acknowledge the LMA-INA for offering access to their instruments and expertise and the use of Servicio General de Apoyo a la Investigación-SAI, Universidad de Zaragoza, particularly the Servicio de Medidas Físicas. The support of the German Research Foundation (DFG) via grant FO 956/5-1 is gratefully acknowledged. Authors acknowledge the Center for Information Services and High Performance Computing (ZIH) at TU Dresden for offering access to the HPC system. This work was supported by HFML-RU/NWO-I, member of the European Magnetic Field Laboratory (EMFL). It is part of the research program no. 132 “High Field Magnet Laboratory: a global player in science in high magnetic fields” financed by The Netherlands Organisation for Scientific Research (NWO)
ProjectGobierno de España. MAT2017-82970-C2-2-R; Gobierno de España. PIE201760E027; Gobierno de España. FIS2017-84330-R; Gobierno de España. MDM-2014-0377; info:eu-repo/grantAgreement/EC/H2020/679080/EU//PNICTEYES; info:eu-repo/grantAgreement/EC/H2020/654360/EU//NFFA-EUROPE; Comunidad de Madrid. S2013/MIT-2850/NANOFRONTMAG-CM
SubjectsGinzburg-Landau equation; Helium ion microscope; Three-dimensional nanoprinting; Phase slips; Nanosuperconductors; Focused-ion-beam-induced deposition; Física; Química
NoteThis document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/abs/10.1021/acs.nanolett.9b03153
Rights© 2019 American Chemical Society
Novel schemes based on the design of complex three-dimensional (3D) nanoscale architectures are required for the development of the next generation of advanced electronic components. He+ focused-ion-beam (FIB) microscopy in combination with a precursor gas allows one to fabricate 3D nanostructures with an extreme resolution and a considerably higher aspect ratio than FIB-based methods, such as Ga+ FIB-induced deposition, or other additive manufacturing technologies. In this work, we report the fabrication of 3D tungsten carbide nanohelices with on-demand geometries via controlling key deposition parameters. Our results show the smallest and highest-densely packed nanohelix ever fabricated so far, with dimensions of 100 nm in diameter and aspect ratio up to 65. These nanohelices become superconducting at 7 K and show a large critical magnetic field and critical current density. In addition, given its helical 3D geometry, fingerprints of vortex and phase-slip patterns are experimentally identified and supported by numerical simulations based on the time-dependent Ginzburg-Landau equation. These results can be understood by the helical geometry that induces specific superconducting properties and paves the way for future electronic components, such as sensors, energy storage elements, and nanoantennas, based on 3D compact nanosuperconductors
Google Scholar:Córdoba, Rosa - Mailly, Dominique - Rezaev, Roman O. - Smirnova, Ekaterina I. - Schmidt, Oliver G. - Fomin, Vladimir M. - Zeitler, Uli - Guillamón, Isabel - Suderow, Hermann - De Teresa, José María
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