Anomalous magneto-resistance of Ni-nanowire/Nb hybrid system

Abstract We examine the influence of superconductivity on the magneto-transport properties of a ferromagnetic Ni nanowire connected to Nb electrodes. We show experimentally and confirm theoretically that the Nb/Ni interface plays an essential role in the electron transport through the device. Just b...

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Autores principales:	O. V. Skryabina, S. N. Kozlov, S. V. Egorov, A. A. Klimenko, V. V. Ryazanov, S. V. Bakurskiy, M. Yu. Kupriyanov, N. V. Klenov, I. I. Soloviev, A. A. Golubov, K. S. Napolskii, I. A. Golovchanskiy, D. Roditchev, V. S. Stolyarov
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b8e0818fb65d46289d0172b2acefc0b1
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spelling	oai:doaj.org-article:b8e0818fb65d46289d0172b2acefc0b12021-12-02T15:08:59ZAnomalous magneto-resistance of Ni-nanowire/Nb hybrid system10.1038/s41598-019-50966-82045-2322https://doaj.org/article/b8e0818fb65d46289d0172b2acefc0b12019-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-50966-8https://doaj.org/toc/2045-2322Abstract We examine the influence of superconductivity on the magneto-transport properties of a ferromagnetic Ni nanowire connected to Nb electrodes. We show experimentally and confirm theoretically that the Nb/Ni interface plays an essential role in the electron transport through the device. Just below the superconducting transition, a strong inverse proximity effect from the nanowire suppresses superconducting correlations at Nb/Ni interfaces, resulting in a conventional anisotropic magneto-resistive response. At lower temperatures however, the Nb electrodes operate as superconducting shunts. As the result, the magneto-resistance exhibits a strongly growing hysteretic behavior accompanied by a series of saw-like jumps. The latter are associated with the penetration/escape of individual Abrikosov vortices that influence non-equilibrium processes at the Nb/Ni interface. These effects should be taken into account when designing superconducting quantum nano-hybrids involving ferromagnetic nanowires.O. V. SkryabinaS. N. KozlovS. V. EgorovA. A. KlimenkoV. V. RyazanovS. V. BakurskiyM. Yu. KupriyanovN. V. KlenovI. I. SolovievA. A. GolubovK. S. NapolskiiI. A. GolovchanskiyD. RoditchevV. S. StolyarovNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-7 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q O. V. Skryabina S. N. Kozlov S. V. Egorov A. A. Klimenko V. V. Ryazanov S. V. Bakurskiy M. Yu. Kupriyanov N. V. Klenov I. I. Soloviev A. A. Golubov K. S. Napolskii I. A. Golovchanskiy D. Roditchev V. S. Stolyarov Anomalous magneto-resistance of Ni-nanowire/Nb hybrid system
description	Abstract We examine the influence of superconductivity on the magneto-transport properties of a ferromagnetic Ni nanowire connected to Nb electrodes. We show experimentally and confirm theoretically that the Nb/Ni interface plays an essential role in the electron transport through the device. Just below the superconducting transition, a strong inverse proximity effect from the nanowire suppresses superconducting correlations at Nb/Ni interfaces, resulting in a conventional anisotropic magneto-resistive response. At lower temperatures however, the Nb electrodes operate as superconducting shunts. As the result, the magneto-resistance exhibits a strongly growing hysteretic behavior accompanied by a series of saw-like jumps. The latter are associated with the penetration/escape of individual Abrikosov vortices that influence non-equilibrium processes at the Nb/Ni interface. These effects should be taken into account when designing superconducting quantum nano-hybrids involving ferromagnetic nanowires.
format	article
author	O. V. Skryabina S. N. Kozlov S. V. Egorov A. A. Klimenko V. V. Ryazanov S. V. Bakurskiy M. Yu. Kupriyanov N. V. Klenov I. I. Soloviev A. A. Golubov K. S. Napolskii I. A. Golovchanskiy D. Roditchev V. S. Stolyarov
author_facet	O. V. Skryabina S. N. Kozlov S. V. Egorov A. A. Klimenko V. V. Ryazanov S. V. Bakurskiy M. Yu. Kupriyanov N. V. Klenov I. I. Soloviev A. A. Golubov K. S. Napolskii I. A. Golovchanskiy D. Roditchev V. S. Stolyarov
author_sort	O. V. Skryabina
title	Anomalous magneto-resistance of Ni-nanowire/Nb hybrid system
title_short	Anomalous magneto-resistance of Ni-nanowire/Nb hybrid system
title_full	Anomalous magneto-resistance of Ni-nanowire/Nb hybrid system
title_fullStr	Anomalous magneto-resistance of Ni-nanowire/Nb hybrid system
title_full_unstemmed	Anomalous magneto-resistance of Ni-nanowire/Nb hybrid system
title_sort	anomalous magneto-resistance of ni-nanowire/nb hybrid system
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/b8e0818fb65d46289d0172b2acefc0b1
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Anomalous magneto-resistance of Ni-nanowire/Nb hybrid system

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