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Conditioning of Superconductive Properties in Graph-Shaped Reticles

We report on phenomena observed in planar integrated networks obtained connecting superconducting island by Josephson tunnel junctions. These networks, identifiable as tree-like graphs, have branches consisting of series arrays of Josephson junctions which can be individually current biased and char...

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Autores principales: Lucci, M., Cassi, D., Merlo, V., Russo, R., Salina, G., Cirillo, M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7311458/
https://www.ncbi.nlm.nih.gov/pubmed/32576836
http://dx.doi.org/10.1038/s41598-020-66457-0
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author Lucci, M.
Cassi, D.
Merlo, V.
Russo, R.
Salina, G.
Cirillo, M.
author_facet Lucci, M.
Cassi, D.
Merlo, V.
Russo, R.
Salina, G.
Cirillo, M.
author_sort Lucci, M.
collection PubMed
description We report on phenomena observed in planar integrated networks obtained connecting superconducting island by Josephson tunnel junctions. These networks, identifiable as tree-like graphs, have branches consisting of series arrays of Josephson junctions which can be individually current biased and characterized. Both Josephson supercurrents and gap parameters of the arrays embedded in the graph structures display properties significantly different from those of “reference” arrays fabricated on the same chips and having identical geometrical shape. The temperature and magnetic field dependencies of the Josephson current of the embedded arrays both show a singular behavior when a critical value is reached by the Josephson characteristic energy. The gap parameter of the junctions generating the embedded arrays is higher than that of the junctions forming the reference geometrical arrays.
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spelling pubmed-73114582020-06-25 Conditioning of Superconductive Properties in Graph-Shaped Reticles Lucci, M. Cassi, D. Merlo, V. Russo, R. Salina, G. Cirillo, M. Sci Rep Article We report on phenomena observed in planar integrated networks obtained connecting superconducting island by Josephson tunnel junctions. These networks, identifiable as tree-like graphs, have branches consisting of series arrays of Josephson junctions which can be individually current biased and characterized. Both Josephson supercurrents and gap parameters of the arrays embedded in the graph structures display properties significantly different from those of “reference” arrays fabricated on the same chips and having identical geometrical shape. The temperature and magnetic field dependencies of the Josephson current of the embedded arrays both show a singular behavior when a critical value is reached by the Josephson characteristic energy. The gap parameter of the junctions generating the embedded arrays is higher than that of the junctions forming the reference geometrical arrays. Nature Publishing Group UK 2020-06-23 /pmc/articles/PMC7311458/ /pubmed/32576836 http://dx.doi.org/10.1038/s41598-020-66457-0 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Lucci, M.
Cassi, D.
Merlo, V.
Russo, R.
Salina, G.
Cirillo, M.
Conditioning of Superconductive Properties in Graph-Shaped Reticles
title Conditioning of Superconductive Properties in Graph-Shaped Reticles
title_full Conditioning of Superconductive Properties in Graph-Shaped Reticles
title_fullStr Conditioning of Superconductive Properties in Graph-Shaped Reticles
title_full_unstemmed Conditioning of Superconductive Properties in Graph-Shaped Reticles
title_short Conditioning of Superconductive Properties in Graph-Shaped Reticles
title_sort conditioning of superconductive properties in graph-shaped reticles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7311458/
https://www.ncbi.nlm.nih.gov/pubmed/32576836
http://dx.doi.org/10.1038/s41598-020-66457-0
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