Symmetry-breaking interlayer Dzyaloshinskii–Moriya interactions in synthetic antiferromagnets

Amalio Fernández-Pacheco (Corresponding author), Elena Vedmedenko, Fanny Ummelen, Rhodri Mansell, Dorothée Petit, Russell P. Cowburn

Research output: Contribution to journalLetterAcademicpeer-review

25 Citations (Scopus)

Abstract

The magnetic interfacial Dzyaloshinskii–Moriya interaction (DMI) in multilayered thin films can lead to chiral spin states, which are of paramount importance for future spintronic technologies1,2. Interfacial DMI typically manifests as an intralayer interaction, mediated via a paramagnetic heavy metal in systems lacking inversion symmetry3. Here we show that, by designing synthetic antiferromagnets with canted magnetization states4,5, it is also possible to observe direct evidence of the interfacial interlayer DMI at room temperature. The interlayer DMI breaks the symmetry of the magnetic reversal process via the emergence of non-collinear spin states, which results in chiral exchange-biased hysteresis loops. The spin chiral interlayer interactions reported here are expected to manifest in a range of multilayered thin-film systems, opening up as yet unexplored avenues for the development and exploitation of chiral effects in magnetic heterostructures6–8.

Original languageEnglish
Pages (from-to)679-684
Number of pages6
JournalNature Materials
Volume18
Issue number7
DOIs
Publication statusPublished - 1 Jul 2019

Fingerprint Dive into the research topics of 'Symmetry-breaking interlayer Dzyaloshinskii–Moriya interactions in synthetic antiferromagnets'. Together they form a unique fingerprint.

Cite this