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 Klaeui, Mathias 2024-01-19T19:34:38Z 2024-01-19T19:34:38Z 2021-09-02 2019-07 1476-1122 https://pubs.kist.re.kr/handle/201004/119851 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. English Nature Publishing Group Long-range chiral exchange interaction in synthetic antiferromagnets Article 10.1038/s41563-019-0370-z 1 Nature Materials, v.18, no.7, pp.703 - 708 Nature Materials 18 7 703 708 N scie scopus 000472020800015 2-s2.0-85067079156 Chemistry, Physical Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Materials Science Physics Article CURRENT-DRIVEN DYNAMICS DOMAIN-WALL MOTION MAGNETIZATION TEMPERATURE TORQUE Exchange interaction Chirality Dzyaloshinskii？Moriya interaction