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Title: Spin-orbit torque switching of chiral magnetization across a synthetic antiferromagnet
Abstract

The interfacial Dzyaloshinskii-Moriya interaction (DMI) holds promises for design and control of chiral spin textures in low-dimensional magnets with efficient current-driven dynamics. Recently, an interlayer DMI has been found to exist across magnetic multilayers with a heavy-metal spacer between magnetic layers. This opens the possibility of chirality in these three-dimensional magnetic structures. Here we show the existence of the interlayer DMI in a synthetic antiferromagnetic multilayer with both inversion and in-plane asymmetry. We analyse the interlayer DMI’s effects on the magnetization and the current-induced spin-orbit torque (SOT) switching of magnetization through a combination of experimental and numerical studies. The chiral nature of the interlayer DMI leads to an asymmetric SOT switching of magnetization under an in-plane magnetic field. Our work paves the way for further explorations on controlling chiral magnetizations across magnetic multilayers through SOTs, which can provide a new path in the design of SOT devices.

Authors:
; ; ;
Award ID(s):
1936221
Publication Date:
NSF-PAR ID:
10210095
Journal Name:
Communications Physics
Volume:
4
Issue:
1
ISSN:
2399-3650
Publisher:
Nature Publishing Group
Sponsoring Org:
National Science Foundation
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