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Tuning magnon spectra via interlayer coupling in pseudo-3D nanostructured artificial spin ice arrays

de Rojas, Julius; Atkinson, Del; Adeyeye, Adekunle O.

Tuning magnon spectra via interlayer coupling in pseudo-3D nanostructured artificial spin ice arrays Thumbnail


Authors

Julius de Rojas



Abstract

We have investigated the static and dynamic behavior of “pseudo-3D” trilayer square artificial spin ice structures. The trilayer stack comprises of two ferromagnetic Ni81Fe19 (Permalloy, Py) layers with 30 and 70 nm thickness, separated by a nonmagnetic copper layer of varying thickness from 2 to 40 nm. We show that the copper thickness enables interlayer coupling between layers to be finely controlled, leading to bespoke magnetization states and resonance spectra tuning. Our results demonstrate a further route to control the interaction in artificial spin ices beyond planar structures, enabling tunable magnetization dynamics, a potentially programmable degree of freedom for magnonic and microwave devices.

Citation

de Rojas, J., Atkinson, D., & Adeyeye, A. O. (2023). Tuning magnon spectra via interlayer coupling in pseudo-3D nanostructured artificial spin ice arrays. Applied Physics Letters, 123(23), Article 232407. https://doi.org/10.1063/5.0177447

Journal Article Type Article
Acceptance Date Nov 18, 2023
Online Publication Date Dec 8, 2023
Publication Date Dec 4, 2023
Deposit Date Jan 22, 2024
Publicly Available Date Jan 22, 2024
Journal Applied Physics Letters
Print ISSN 0003-6951
Electronic ISSN 1077-3118
Publisher American Institute of Physics
Peer Reviewed Peer Reviewed
Volume 123
Issue 23
Article Number 232407
DOI https://doi.org/10.1063/5.0177447
Keywords Physics and Astronomy (miscellaneous)
Public URL https://durham-repository.worktribe.com/output/2161054

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