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Collective spin waves in RKKY interlayer-coupled Ni 80 Fe 20 /Ru/Ni 80 Fe 20 nanowire arrays

Adeyeye, Adekunle O; Hussain, Bushra; Cottam, Michael G; Gubbiotti, Gianluca

Collective spin waves in RKKY interlayer-coupled Ni 80 Fe 20 /Ru/Ni 80 Fe 20 nanowire arrays Thumbnail


Authors

Bushra Hussain

Michael G Cottam

Gianluca Gubbiotti



Abstract

We report on a comprehensive investigation of collective spin waves in Ruderman–Kittel–Kasuya–Yosida (RKKY) interlayer-coupled Ni80Fe20 (10 nm)/Ru(1.0 nm)/ Ni80Fe20 (10 nm) nanowire (NW) arrays. We employed Brillouin light scattering to probe the field- and wavevector-dependences of the spin-wave frequency spectra. The acquired data were subsequently analyzed and interpreted within the framework of a microscopic Hamiltonian-based method, enabling a detailed understanding of the observed spin-wave behavior. We observed the propagation of Bloch-type collective spin waves within the arrays, characterized by distinct magnonic bandwidths that stem from the combined influence of RKKY interlayer and inter-NW dynamical dipolar interactions.

Citation

Adeyeye, A. O., Hussain, B., Cottam, M. G., & Gubbiotti, G. (2024). Collective spin waves in RKKY interlayer-coupled Ni 80 Fe 20 /Ru/Ni 80 Fe 20 nanowire arrays. Journal of Physics: Condensed Matter, 36(39), Article 395801. https://doi.org/10.1088/1361-648x/ad5923

Journal Article Type Article
Acceptance Date Jun 17, 2024
Online Publication Date Jun 28, 2024
Publication Date Oct 2, 2024
Deposit Date Jul 3, 2024
Publicly Available Date Jul 3, 2024
Journal Journal of Physics: Condensed Matter
Print ISSN 0953-8984
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 36
Issue 39
Article Number 395801
DOI https://doi.org/10.1088/1361-648x/ad5923
Keywords Brillouin light scattering, spin dynamics, interlayer exchange coupling, spin waves, RKKY, magnetic nanowires
Public URL https://durham-repository.worktribe.com/output/2505483

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