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Chirally coupled nanomagnets

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Luo Z. C., Dao T. P., Hrabec A., Vijayakumar J., Kleibert A., Baumgartner M., Kirk E., Cui J. Z., Savchenko T., Krishnaswamy G., Heyderman L. J., Gambardella P.,
Project Spin-orbitronics in ferromagnets and antiferromagnets
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Original article (peer-reviewed)

Journal Science
Volume (Issue) 363(6434)
Page(s) 1435 - 1435
ISBN 0036-8075
Title of proceedings Science
DOI 10.1126/science.aau7913

Open Access

Type of Open Access Repository (Green Open Access)


Magnetically coupled nanomagnets have multiple applications in nonvolatile memories, logic gates, and sensors. The most effective couplings have been found to occur between the magnetic layers in a vertical stack. We achieved strong coupling of laterally adjacent nanomagnets using the interfacial Dzyaloshinskii-Moriya interaction. This coupling is mediated by chiral domain walls between out-of-plane and in-plane magnetic regions and dominates the behavior of nanomagnets below a critical size. We used this concept to realize lateral exchange bias, field-free current-induced switching between multistate magnetic configurations as well as synthetic antiferromagnets, skyrmions, and artificial spin ices covering a broad range of length scales and topologies. Our work provides a platform to design arrays of correlated nanomagnets and to achieve all-electric control of planar logic gates and memory devices.