Superconductivity assisted change of the perpendicular magnetic anisotropy in V/MgO/Fe junctions

Abstract Controlling the perpendicular magnetic anisotropy (PMA) in thin films has received considerable attention in recent years due to its technological importance. PMA based devices usually involve heavy-metal (oxide)/ferromagnetic-metal bilayers, where, thanks to interfacial spin-orbit coupling...

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Autores principales:	César González-Ruano, Diego Caso, Lina G. Johnsen, Coriolan Tiusan, Michel Hehn, Niladri Banerjee, Jacob Linder, Farkhad G. Aliev
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d87031a007604b2583b580003245eb3e
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spelling	oai:doaj.org-article:d87031a007604b2583b580003245eb3e2021-12-02T15:14:47ZSuperconductivity assisted change of the perpendicular magnetic anisotropy in V/MgO/Fe junctions10.1038/s41598-021-98079-52045-2322https://doaj.org/article/d87031a007604b2583b580003245eb3e2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98079-5https://doaj.org/toc/2045-2322Abstract Controlling the perpendicular magnetic anisotropy (PMA) in thin films has received considerable attention in recent years due to its technological importance. PMA based devices usually involve heavy-metal (oxide)/ferromagnetic-metal bilayers, where, thanks to interfacial spin-orbit coupling (SOC), the in-plane (IP) stability of the magnetisation is broken. Here we show that in V/MgO/Fe(001) epitaxial junctions with competing in-plane and out-of-plane (OOP) magnetic anisotropies, the SOC mediated interaction between a ferromagnet (FM) and a superconductor (SC) enhances the effective PMA below the superconducting transition. This produces a partial magnetisation reorientation without any applied field for all but the largest junctions, where the IP anisotropy is more robust; for the smallest junctions there is a reduction of the field required to induce a complete OOP transition ( $$H_\text {OOP}$$ H OOP ) due to the stronger competition between the IP and OOP anisotropies. Our results suggest that the degree of effective PMA could be controlled by the junction lateral size in the presence of superconductivity and an applied electric field. We also discuss how the $$H_\text {OOP}$$ H OOP field could be affected by the interaction between magnetic stray fields and superconducting vortices. Our experimental findings, supported by numerical modelling of the ferromagnet-superconductor interaction, open pathways to active control of magnetic anisotropy in the emerging dissipation-free superconducting spin electronics.César González-RuanoDiego CasoLina G. JohnsenCoriolan TiusanMichel HehnNiladri BanerjeeJacob LinderFarkhad G. AlievNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q César González-Ruano Diego Caso Lina G. Johnsen Coriolan Tiusan Michel Hehn Niladri Banerjee Jacob Linder Farkhad G. Aliev Superconductivity assisted change of the perpendicular magnetic anisotropy in V/MgO/Fe junctions
description	Abstract Controlling the perpendicular magnetic anisotropy (PMA) in thin films has received considerable attention in recent years due to its technological importance. PMA based devices usually involve heavy-metal (oxide)/ferromagnetic-metal bilayers, where, thanks to interfacial spin-orbit coupling (SOC), the in-plane (IP) stability of the magnetisation is broken. Here we show that in V/MgO/Fe(001) epitaxial junctions with competing in-plane and out-of-plane (OOP) magnetic anisotropies, the SOC mediated interaction between a ferromagnet (FM) and a superconductor (SC) enhances the effective PMA below the superconducting transition. This produces a partial magnetisation reorientation without any applied field for all but the largest junctions, where the IP anisotropy is more robust; for the smallest junctions there is a reduction of the field required to induce a complete OOP transition ( $$H_\text {OOP}$$ H OOP ) due to the stronger competition between the IP and OOP anisotropies. Our results suggest that the degree of effective PMA could be controlled by the junction lateral size in the presence of superconductivity and an applied electric field. We also discuss how the $$H_\text {OOP}$$ H OOP field could be affected by the interaction between magnetic stray fields and superconducting vortices. Our experimental findings, supported by numerical modelling of the ferromagnet-superconductor interaction, open pathways to active control of magnetic anisotropy in the emerging dissipation-free superconducting spin electronics.
format	article
author	César González-Ruano Diego Caso Lina G. Johnsen Coriolan Tiusan Michel Hehn Niladri Banerjee Jacob Linder Farkhad G. Aliev
author_facet	César González-Ruano Diego Caso Lina G. Johnsen Coriolan Tiusan Michel Hehn Niladri Banerjee Jacob Linder Farkhad G. Aliev
author_sort	César González-Ruano
title	Superconductivity assisted change of the perpendicular magnetic anisotropy in V/MgO/Fe junctions
title_short	Superconductivity assisted change of the perpendicular magnetic anisotropy in V/MgO/Fe junctions
title_full	Superconductivity assisted change of the perpendicular magnetic anisotropy in V/MgO/Fe junctions
title_fullStr	Superconductivity assisted change of the perpendicular magnetic anisotropy in V/MgO/Fe junctions
title_full_unstemmed	Superconductivity assisted change of the perpendicular magnetic anisotropy in V/MgO/Fe junctions
title_sort	superconductivity assisted change of the perpendicular magnetic anisotropy in v/mgo/fe junctions
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d87031a007604b2583b580003245eb3e
work_keys_str_mv	AT cesargonzalezruano superconductivityassistedchangeoftheperpendicularmagneticanisotropyinvmgofejunctions AT diegocaso superconductivityassistedchangeoftheperpendicularmagneticanisotropyinvmgofejunctions AT linagjohnsen superconductivityassistedchangeoftheperpendicularmagneticanisotropyinvmgofejunctions AT coriolantiusan superconductivityassistedchangeoftheperpendicularmagneticanisotropyinvmgofejunctions AT michelhehn superconductivityassistedchangeoftheperpendicularmagneticanisotropyinvmgofejunctions AT niladribanerjee superconductivityassistedchangeoftheperpendicularmagneticanisotropyinvmgofejunctions AT jacoblinder superconductivityassistedchangeoftheperpendicularmagneticanisotropyinvmgofejunctions AT farkhadgaliev superconductivityassistedchangeoftheperpendicularmagneticanisotropyinvmgofejunctions
_version_	1718387601779458048

Superconductivity assisted change of the perpendicular magnetic anisotropy in V/MgO/Fe junctions

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