Reference : In situ tailoring of superconducting junctions via electro-annealing
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/219299
In situ tailoring of superconducting junctions via electro-annealing
English
[fr] Ajustement in situ de jonctions supraconductrices par electro-annealing
Lombardo, Joseph mailto [Université de Liège - ULiège > Département de physique > Physique expérimentale des matériaux nanostructurés >]
Jelic, Zeljko [Université de Liège - ULiège > Dépatement de Physique > Experimental Physics of Nanostructured Materials > > >]
Baumans, Xavier [Université de Liège - ULiège > Département de physique > Physique expérimentale des matériaux nanostructurés >]
Scheerder, Jeroen [Katholieke Universiteit Leuven - KUL > INPAC - Institute for Nanoscale Physics and Chemistry > Laboratory of Solid-State Physics and Magnetism > >]
Nacenta, Jorge P. [Centre National de la Recherche Scientifique - CNRS > Université Grenoble-Alpes > Grenoble INP > >]
Moshchalkov, Victor V. [Katholieke Universiteit Leuven - KUL > Institute for Nanoscale Physics and Chemistry > Laboratory of Solid-State Physics and Chemistry > >]
Kramer, Roman B. G. [Centre National de la Recherche Scientifique - CNRS > Université Grenoble-Alpes > > >]
Van de Vondel, Joris [Katholieke Universiteit Leuven - KUL > Institute for Nanoscale Physics and Chemistry > Laboratory of Solid-State Physics and Magnetism > >]
Milošević, Milorad V. [Universiteit Antwerpen - UA > Departement Fysica > > >]
Silhanek, Alejandro mailto [Université de Liège - ULiège > Département de physique > Physique expérimentale des matériaux nanostructurés >]
28-Jan-2018
Nanoscale
Royal Society of Chemistry Publishing
10
4
1987-1996
Yes (verified by ORBi)
International
2040-3364
2040-3372
Royaume-Uni
[en] superconductivity ; niobium ; mesoscopic ; electro-annealing ; electromigration
[en] We demonstrate the in situ engineering of superconducting nanocircuitry by targeted modulation of material properties through high applied current densities. We show that the sequential repetition of such customized electro-annealing in a niobium (Nb) nanoconstriction can broadly tune the superconducting critical temperature Tc and the normal-state resistance Rn in the targeted area. Once a sizable Rn is reached, clear magneto-resistance oscillations are detected along with a Fraunhofer-like field dependence of the critical current, indicating the formation of a weak link but with further adjustable characteristics. Advanced Ginzburg–Landau simulations fully corroborate this picture, employing the detailed parametrization from the electrical characterization and high resolution electron microscope images of the region within the constriction where the material has undergone amorphization by electro-annealing.
Complex and Entangled Systems from Atoms to Materials - CESAM ; Cellule d'Appui à la Recherche et à l'Enseignement en Microscopie - CAREM
FRIA - Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/219299
10.1039/c7nr08571k
http://pubs.rsc.org/en/content/articlelanding/2018/nr/c7nr08571k#!divRelatedContent&articles

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