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Visualizing domain wall and reverse domain superconductivity

In magnetically coupled, planar ferromagnet-superconductor (F/S) hybrid structures, magnetic domain walls can be used to spatially confine the superconductivity. In contrast to a superconductor in a uniform applied magnetic field, the nucleation of the superconducting order parameter in F/S structur...

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Autores principales: Iavarone, M., Moore, S. A., Fedor, J., Ciocys, S. T., Karapetrov, G., Pearson, J., Novosad, V., Bader, S. D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Pub. Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4354251/
https://www.ncbi.nlm.nih.gov/pubmed/25164004
http://dx.doi.org/10.1038/ncomms5766
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author Iavarone, M.
Moore, S. A.
Fedor, J.
Ciocys, S. T.
Karapetrov, G.
Pearson, J.
Novosad, V.
Bader, S. D.
author_facet Iavarone, M.
Moore, S. A.
Fedor, J.
Ciocys, S. T.
Karapetrov, G.
Pearson, J.
Novosad, V.
Bader, S. D.
author_sort Iavarone, M.
collection PubMed
description In magnetically coupled, planar ferromagnet-superconductor (F/S) hybrid structures, magnetic domain walls can be used to spatially confine the superconductivity. In contrast to a superconductor in a uniform applied magnetic field, the nucleation of the superconducting order parameter in F/S structures is governed by the inhomogeneous magnetic field distribution. The interplay between the superconductivity localized at the domain walls and far from the walls leads to effects such as re-entrant superconductivity and reverse domain superconductivity with the critical temperature depending upon the location. Here we use scanning tunnelling spectroscopy to directly image the nucleation of superconductivity at the domain wall in F/S structures realized with Co-Pd multilayers and Pb thin films. Our results demonstrate that such F/S structures are attractive model systems that offer the possibility to control the strength and the location of the superconducting nucleus by applying an external magnetic field, potentially useful to guide vortices for computing application.
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spelling pubmed-43542512015-03-19 Visualizing domain wall and reverse domain superconductivity Iavarone, M. Moore, S. A. Fedor, J. Ciocys, S. T. Karapetrov, G. Pearson, J. Novosad, V. Bader, S. D. Nat Commun Article In magnetically coupled, planar ferromagnet-superconductor (F/S) hybrid structures, magnetic domain walls can be used to spatially confine the superconductivity. In contrast to a superconductor in a uniform applied magnetic field, the nucleation of the superconducting order parameter in F/S structures is governed by the inhomogeneous magnetic field distribution. The interplay between the superconductivity localized at the domain walls and far from the walls leads to effects such as re-entrant superconductivity and reverse domain superconductivity with the critical temperature depending upon the location. Here we use scanning tunnelling spectroscopy to directly image the nucleation of superconductivity at the domain wall in F/S structures realized with Co-Pd multilayers and Pb thin films. Our results demonstrate that such F/S structures are attractive model systems that offer the possibility to control the strength and the location of the superconducting nucleus by applying an external magnetic field, potentially useful to guide vortices for computing application. Nature Pub. Group 2014-08-28 /pmc/articles/PMC4354251/ /pubmed/25164004 http://dx.doi.org/10.1038/ncomms5766 Text en Copyright © 2014, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Iavarone, M.
Moore, S. A.
Fedor, J.
Ciocys, S. T.
Karapetrov, G.
Pearson, J.
Novosad, V.
Bader, S. D.
Visualizing domain wall and reverse domain superconductivity
title Visualizing domain wall and reverse domain superconductivity
title_full Visualizing domain wall and reverse domain superconductivity
title_fullStr Visualizing domain wall and reverse domain superconductivity
title_full_unstemmed Visualizing domain wall and reverse domain superconductivity
title_short Visualizing domain wall and reverse domain superconductivity
title_sort visualizing domain wall and reverse domain superconductivity
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4354251/
https://www.ncbi.nlm.nih.gov/pubmed/25164004
http://dx.doi.org/10.1038/ncomms5766
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