Cited 5 time in webofscience Cited 3 time in scopus

Long-range chiral exchange interaction in synthetic antiferromagnets

Title
Long-range chiral exchange interaction in synthetic antiferromagnets
Authors
Han, Dong-SooLee, KyujoonHanke, Jan-PhilippMokrousov, YuriyKim, Kyoung-WhanYoo, Woosukvan Hees, Youri L. W.Kim, Tae-WanLavrijsen, ReinoudYou, Chun-YeolSwagten, Henk J. M.Jung, Myung-HwaKlaeui, Mathias
DGIST Authors
You, Chun-Yeol
Issue Date
2019-07
Citation
Nature Materials, 18(7), 703-708
Type
Article
Article Type
Article
Keywords
Energy efficiencyExchange interactionsMagnetic structureMagnetismTexturesTopologyAntiparallel magnetizationsAntisymmetric exchange interactionsAsymmetric hysteresisEnergy efficientIn-plane fieldsInterlayer exchange interactionsSynthetic antiferromagnetsTopological structureAntiferromagnetic materials
ISSN
1476-1122
Abstract
The exchange interaction governs static and dynamic magnetism. This fundamental interaction comes in two flavours—symmetric and antisymmetric. The symmetric interaction leads to ferro- and antiferromagnetism, and the antisymmetric interaction has attracted significant interest owing to its major role in promoting topologically non-trivial spin textures that promise fast, energy-efficient devices. So far, the antisymmetric exchange interaction has been found to be rather short ranged and limited to a single magnetic layer. Here we report a long-range antisymmetric interlayer exchange interaction in perpendicularly magnetized synthetic antiferromagnets with parallel and antiparallel magnetization alignments. Asymmetric hysteresis loops under an in-plane field reveal a unidirectional and chiral nature of this interaction, which results in canted magnetic structures. We explain our results by considering spin–orbit coupling combined with reduced symmetry in multilayers. Our discovery of a long-range chiral interaction provides an additional handle to engineer magnetic structures and could enable three-dimensional topological structures. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
URI
http://hdl.handle.net/20.500.11750/10092
DOI
10.1038/s41563-019-0370-z
Publisher
Nature Publishing Group
Related Researcher
  • Author You, Chun-Yeol Spin Phenomena for Information Nano-devices(SPIN) Lab
  • Research Interests Spintronics; Condensed Matter Physics; Magnetic Materials & Thin Films; Micromagnetic Simulations; Spin Nano-Devices
Files:
There are no files associated with this item.
Collection:
Department of Emerging Materials ScienceSpin Phenomena for Information Nano-devices(SPIN) Lab1. Journal Articles


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