This title appears in the Scientific Report :
2019
Please use the identifier:
http://hdl.handle.net/2128/24860 in citations.
Please use the identifier: http://dx.doi.org/10.1038/s41563-019-0370-z in citations.
Long-range chiral exchange interaction in synthetic antiferromagnets
Long-range chiral exchange interaction in synthetic antiferromagnets
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 rol...
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Personal Name(s): | Han, Dong-Soo |
---|---|
Lee, Kyujoon / Hanke, Jan-Philipp / Mokrousov, Yuriy / Kim, Kyoung-Whan / Yoo, Woosuk / van Hees, Youri L. W. / Kim, Tae-Wan / Lavrijsen, Reinoud / You, Chun-Yeol / Swagten, Henk J. M. / Jung, Myung-Hwa (Corresponding author) / Kläui, Mathias (Corresponding author) | |
Contributing Institute: |
Quanten-Theorie der Materialien; IAS-1 JARA - HPC; JARA-HPC JARA-FIT; JARA-FIT Quanten-Theorie der Materialien; PGI-1 |
Published in: | Nature materials, 18 (2019) S. 703–708 |
Imprint: |
Basingstoke
Nature Publishing Group
2019
|
PubMed ID: |
31160801 |
DOI: |
10.1038/s41563-019-0370-z |
Document Type: |
Journal Article |
Research Program: |
Topological transport in real materials from ab initio Topological transport in real materials from ab initio Controlling Spin-Based Phenomena |
Link: |
OpenAccess Restricted OpenAccess Restricted |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1038/s41563-019-0370-z in citations.
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. |