Symmetry effects on the static and dynamic properties of coupled magnetic oscillators
View / Open Files
Authors
Patchett, JP
Drouhin, M
Liao, JW
Soban, Z
Petit, D
Haigh, J
Roy, P
Wunderlich, J
Cowburn, RP
Ciccarelli, C
Publication Date
2022Journal Title
Physical Review B
ISSN
2469-9950
Publisher
American Physical Society (APS)
Type
Article
This Version
AM
Metadata
Show full item recordCitation
Patchett, J., Drouhin, M., Liao, J., Soban, Z., Petit, D., Haigh, J., Roy, P., et al. (2022). Symmetry effects on the static and dynamic properties of coupled magnetic oscillators. Physical Review B https://doi.org/10.1103/PhysRevB.105.104436
Abstract
The effect of symmetry on the resonance spectra of antiferromagnetically
coupled oscillators has attracted new interest with the discovery of
symmetry-breaking induced anti-crossings. Here, we experimentally characterise
the resonance spectrum of a synthetic antiferromagnet Pt/CoFeB/Ru/CoFeB/Pt,
where we are able to independently tune the effective magnetisation of the two
coupled magnets. To model our results we apply the mathematical methods of
group theory to the solutions of the Landau Lifshitz Gilbert equation. This
general approach, usually applied to quantum mechanical systems, allows us to
identify the main features of the resonance spectrum in terms of symmetry
breaking and to make a direct comparison with crystal antiferromagnets.
Sponsorship
EPSRC (2125947)
European Research Council (610115)
Identifiers
External DOI: https://doi.org/10.1103/PhysRevB.105.104436
This record's URL: https://www.repository.cam.ac.uk/handle/1810/335150
Statistics
Total file downloads (since January 2020). For more information on metrics see the
IRUS guide.