Control of the noncollinear interlayer exchange coupling

Autor(en)

Zachary R. Nunn, Claas Abert, Dieter Suess, Erol Girt

Abstrakt

Interlayer exchange coupling in transition metal multilayers has been intensively studied for more than three decades and is incorporated into almost all spintronic devices. With the current spacer layers, only collinear magnetic alignment can be reliably achieved; however, controlling the coupling angle has the potential to markedly expand the use of interlayer exchange coupling. Here, we show that the coupling angle between the magnetic moments of two ferromagnetic layers can be precisely controlled by inserting a specially designed magnetic metallic spacer layer between them. The coupling angle is controlled solely by the composition of the spacer layer. Moreover, the biquadratic coupling strength, responsible for noncollinear alignment, is larger than that of current materials. These properties allow for the fabrication and study of not yet realized magnetic structures that have the potential to improve existing spintronic devices.

Organisation(en)

Forschungsplattform MMM Mathematics-Magnetism-Materials, Physik Funktioneller Materialien

Externe Organisation(en)

Simon Fraser University

Journal

Science Advances

Band

6

Anzahl der Seiten

7

ISSN

2375-2548

DOI

https://doi.org/10.1126/sciadv.abd8861

Publikationsdatum

11-2020

Peer-reviewed

Ja

ÖFOS 2012

103017 Magnetismus, 103018 Materialphysik

Schlagwörter

ASJC Scopus Sachgebiete

General

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/4df5d4db-8b89-4c6d-978f-dd5ef6828341