Open Access
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Scientific Reports, volume 11, issue 1, publication number 19041

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

César González-Ruano 1
Diego Caso 1
Lina G Johnsen 2
Coriolan Tiusan 3, 4
Michel Hehn 4
Niladri Banerjee 5
Jacob Linder 2
Farkhad G Aliev 1
Publication typeJournal Article
Publication date2021-09-24
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor4.6
ISSN20452322, 20452322
Multidisciplinary
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 (\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$H_\text {OOP}$$\end{document}HOOP) 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 \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$H_\text {OOP}$$\end{document}HOOP 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.

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GOST Copy
González-Ruano C. et al. Superconductivity assisted change of the perpendicular magnetic anisotropy in V/MgO/Fe junctions // Scientific Reports. 2021. Vol. 11. No. 1. 19041
GOST all authors (up to 50) Copy
González-Ruano C., Caso D., Johnsen L. G., Tiusan C., Hehn M., Banerjee N., Linder J., Aliev F. G. Superconductivity assisted change of the perpendicular magnetic anisotropy in V/MgO/Fe junctions // Scientific Reports. 2021. Vol. 11. No. 1. 19041
RIS |
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RIS Copy
TY - JOUR
DO - 10.1038/s41598-021-98079-5
UR - https://doi.org/10.1038/s41598-021-98079-5
TI - Superconductivity assisted change of the perpendicular magnetic anisotropy in V/MgO/Fe junctions
T2 - Scientific Reports
AU - González-Ruano, César
AU - Caso, Diego
AU - Johnsen, Lina G
AU - Tiusan, Coriolan
AU - Hehn, Michel
AU - Banerjee, Niladri
AU - Linder, Jacob
AU - Aliev, Farkhad G
PY - 2021
DA - 2021/09/24
PB - Springer Nature
IS - 1
VL - 11
PMID - 34561472
SN - 2045-2322
SN - 2045-2322
ER -
BibTex
Cite this
BibTex Copy
@article{2021_González-Ruano,
author = {César González-Ruano and Diego Caso and Lina G Johnsen and Coriolan Tiusan and Michel Hehn and Niladri Banerjee and Jacob Linder and Farkhad G Aliev},
title = {Superconductivity assisted change of the perpendicular magnetic anisotropy in V/MgO/Fe junctions},
journal = {Scientific Reports},
year = {2021},
volume = {11},
publisher = {Springer Nature},
month = {sep},
url = {https://doi.org/10.1038/s41598-021-98079-5},
number = {1},
doi = {10.1038/s41598-021-98079-5}
}
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