Three-dimensional spin-wave dynamics, localization and interference in a 
synthetic antiferromagnet

Girardi, Davide; Finizio, Simone; Donnelly, Claire; Rubini, Guglielmo; Mayr, Sina; Levati, Valerio; Cuccurullo, Simone; Maspero, Federico; Raabe, Jörg; Petti, Daniela; Albisetti, Edoardo

doi:10.1038/s41467-024-47339-9

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Three-dimensional spin-wave dynamics, localization and interference in a synthetic antiferromagnet

MPS-Authors

/persons/resource/persons268195

Donnelly, Claire
Spin3D: Three-Dimensional Magnetic Systems, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Girardi, D., Finizio, S., Donnelly, C., Rubini, G., Mayr, S., Levati, V., et al. (2024). Three-dimensional spin-wave dynamics, localization and interference in a synthetic antiferromagnet. Nature Communications, 15: 3057, pp. 1-9. doi:10.1038/s41467-024-47339-9.

Cite as: https://hdl.handle.net/21.11116/0000-000F-3C56-E

Abstract

Spin waves are collective perturbations in the orientation of the magnetic moments in magnetically ordered materials. Their rich phenomenology is intrinsically three-dimensional; however, the three-dimensional imaging of spin waves has so far not been possible. Here, we image the three-dimensional dynamics of spin waves excited in a synthetic antiferromagnet, with nanoscale spatial resolution and sub-ns temporal resolution, using time-resolved magnetic laminography. In this way, we map the distribution of the spin-wave modes throughout the volume of the structure, revealing unexpected depth-dependent profiles originating from the interlayer dipolar interaction. We experimentally demonstrate the existence of complex three-dimensional interference patterns and analyze them via micromagnetic modelling. We find that these patterns are generated by the superposition of spin waves with non-uniform amplitude profiles, and that their features can be controlled by tuning the composition and structure of the magnetic system. Our results open unforeseen possibilities for the study and manipulation of complex spin-wave modes within nanostructures and magnonic devices. © The Author(s) 2024.