Superconductivity assisted change of the perpendicular magnetic anisotropy in V/MgO/Fe junctions - Archive ouverte HAL
Article Dans Une Revue Scientific Reports Année : 2021

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

Résumé

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.
Fichier principal
Vignette du fichier
s41598-021-98079-5.pdf (1.45 Mo) Télécharger le fichier
Origine Publication financée par une institution
Licence

Dates et versions

hal-04370026 , version 1 (03-02-2024)

Licence

Identifiants

Citer

César González-Ruano, Diego Caso, Lina Johnsen, Coriolan Tiusan, Michel Hehn, et al.. Superconductivity assisted change of the perpendicular magnetic anisotropy in V/MgO/Fe junctions. Scientific Reports, 2021, 11 (1), pp.19041. ⟨10.1038/s41598-021-98079-5⟩. ⟨hal-04370026⟩
12 Consultations
10 Téléchargements

Altmetric

Partager

More