The studies of bilayers and trilayers of ferromagnets and superconductors in a spin valve core structure

Superconductor (S) critical temperature oscillations and reentrant superconductivity with increasing thickness of ferromagnetic (F) layer in F/S nanolayered structures are based on interference effects of the superconducting pairing wave function. The Fulde-Ferrell Larkin-Ovchinnikov (FFLO) like sta...

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Auteur principal:	Zdravkov, Vladimir
Format:	article
Langue:	EN
Publié:	D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2011
Sujets:	Physics QC1-999 Electronics TK7800-8360
Accès en ligne:	https://doaj.org/article/57e385c991664f2bb84ca48b6a4a1d1f
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spelling	oai:doaj.org-article:57e385c991664f2bb84ca48b6a4a1d1f2021-11-21T12:02:02ZThe studies of bilayers and trilayers of ferromagnets and superconductors in a spin valve core structure2537-63651810-648Xhttps://doaj.org/article/57e385c991664f2bb84ca48b6a4a1d1f2011-08-01T00:00:00Zhttps://mjps.nanotech.md/archive/2011/article/21359https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365Superconductor (S) critical temperature oscillations and reentrant superconductivity with increasing thickness of ferromagnetic (F) layer in F/S nanolayered structures are based on interference effects of the superconducting pairing wave function. The Fulde-Ferrell Larkin-Ovchinnikov (FFLO) like state establishing in these geometries is the origin of the phenomenon. Up to now it has been extensively investigated on thin film S/F bilayers with first superconducting layer (S-layer is grown on the substrate). Recently, we have also observed the oscillating phenomena in F/S bilayers where Nb as the S-metal now is grown on the top of the Cu41Ni59 as F-material. Junction of both kinds of bilayers yields an F/S/F trilayer, being the core structure of a superconducting spin valve. For all mentioned cases, we observed deep oscillations of superconducting critical temperature, Tc, and reentrant superconductivity, which are the necessary condition to obtain a large spin switching effect, i.e., a large shift in Tc, if the relative orientation of the magnetizations of the F-layers is changed from parallel to antiparallel.Zdravkov, VladimirD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 10, Iss 3-4, Pp 295-299 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Zdravkov, Vladimir The studies of bilayers and trilayers of ferromagnets and superconductors in a spin valve core structure
description	Superconductor (S) critical temperature oscillations and reentrant superconductivity with increasing thickness of ferromagnetic (F) layer in F/S nanolayered structures are based on interference effects of the superconducting pairing wave function. The Fulde-Ferrell Larkin-Ovchinnikov (FFLO) like state establishing in these geometries is the origin of the phenomenon. Up to now it has been extensively investigated on thin film S/F bilayers with first superconducting layer (S-layer is grown on the substrate). Recently, we have also observed the oscillating phenomena in F/S bilayers where Nb as the S-metal now is grown on the top of the Cu41Ni59 as F-material. Junction of both kinds of bilayers yields an F/S/F trilayer, being the core structure of a superconducting spin valve. For all mentioned cases, we observed deep oscillations of superconducting critical temperature, Tc, and reentrant superconductivity, which are the necessary condition to obtain a large spin switching effect, i.e., a large shift in Tc, if the relative orientation of the magnetizations of the F-layers is changed from parallel to antiparallel.
format	article
author	Zdravkov, Vladimir
author_facet	Zdravkov, Vladimir
author_sort	Zdravkov, Vladimir
title	The studies of bilayers and trilayers of ferromagnets and superconductors in a spin valve core structure
title_short	The studies of bilayers and trilayers of ferromagnets and superconductors in a spin valve core structure
title_full	The studies of bilayers and trilayers of ferromagnets and superconductors in a spin valve core structure
title_fullStr	The studies of bilayers and trilayers of ferromagnets and superconductors in a spin valve core structure
title_full_unstemmed	The studies of bilayers and trilayers of ferromagnets and superconductors in a spin valve core structure
title_sort	studies of bilayers and trilayers of ferromagnets and superconductors in a spin valve core structure
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2011
url	https://doaj.org/article/57e385c991664f2bb84ca48b6a4a1d1f
work_keys_str_mv	AT zdravkovvladimir thestudiesofbilayersandtrilayersofferromagnetsandsuperconductorsinaspinvalvecorestructure AT zdravkovvladimir studiesofbilayersandtrilayersofferromagnetsandsuperconductorsinaspinvalvecorestructure
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The studies of bilayers and trilayers of ferromagnets and superconductors in a spin valve core structure

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