Symmetry-breaking interlayer Dzyaloshinskii–Moriya interactions in synthetic antiferromagnets
| Autor: | Elena Y. Vedmedenko, Dorothée Petit, Russell P. Cowburn, Amalio Fernández-Pacheco, FC Fanny Ummelen, Rhodri Mansell |
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| Přispěvatelé: | Physics of Nanostructures |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Spin states
FOS: Physical sciences 02 engineering and technology 010402 general chemistry 01 natural sciences Magnetization Paramagnetism Condensed Matter::Materials Science Condensed Matter::Superconductivity Mesoscale and Nanoscale Physics (cond-mat.mes-hall) General Materials Science Symmetry breaking Spin-½ Physics Condensed matter physics Spintronics Condensed Matter - Mesoscale and Nanoscale Physics Mechanical Engineering General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Symmetry (physics) 0104 chemical sciences Hysteresis Mechanics of Materials Condensed Matter::Strongly Correlated Electrons 0210 nano-technology |
| Zdroj: | Nature Materials, 18(7), 679-684. Nature Publishing Group |
| ISSN: | 1476-1122 |
| Popis: | The magnetic interfacial Dzyaloshinskii-Moriya interaction (DMI) in multi-layered thin films can lead to exotic chiral spin states, of paramount importance for future spintronic technologies. Interfacial DMI is normally manifested as an intralayer interaction, mediated via a paramagnetic heavy metal in systems lacking inversion symmetry. Here we show how, by designing synthetic antiferromagnets with canted magnetization states, it is also possible to observe interfacial interlayer-DMI at room temperature. The interlayer-DMI breaks the symmetry of the magnetic reversal process via the emergence of noncollinear spin states, which results in chiral exchange-biased hysteresis loops. This work opens up yet unexplored avenues for the development of new chiral spin textures in multi-layered thin film systems. 15 pages, 4 figures |
| Databáze: | OpenAIRE |
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