Email this article Bias-controlled dipole spin-wave coupling in lateral magnetic microstructures
- Authors: Grachev A.1, Sadovnikov A.1
-
Affiliations:
- Saratov National Research State University named after N.G. Chernyshevsky
- Issue: Vol 70, No 5 (2025)
- Pages: 447-455
- Section: ON THE 70th ANNIVERSARY OF S.A. NIKITOV
- URL: https://bakhtiniada.ru/0033-8494/article/view/308938
- DOI: https://doi.org/10.31857/S0033849425050033
- EDN: https://elibrary.ru/qjrral
- ID: 308938
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Abstract
The interaction of spin waves propagating as directional modes in microwaves based on iron-yttrium garnet films has been examined. The configuration consists of three microwaves arranged in parallel, with air gaps separating them, allowing for the coupling between them. The source of this coupling is attributed to the long-range dynamic sagging (dipole) field of the precessing magnetization vector. A methodology is put forward to regulate the properties of this coupling by modulating the angle of the static magnetization with respect to the principal axes of the geometry. Micromagnetic modeling was employed to demonstrate the sub-magnetization angle-controlled propagation of spin waves along lateral microwaves. As a consequence of micromagnetic modeling, spin wave propagation spectra were obtained. The subsequent analysis of these spectra revealed that lateral microwaves can function as functional elements in planar magnonic networks, serving as directional taps, spin wave multiplexers, or microwave power dividers. Furthermore, the study demonstrated the capability to control spin wave routing between the microwaves («magnetic channels») through the modulation of the external magnetic field angle.
About the authors
A. Grachev
Saratov National Research State University named after N.G. Chernyshevsky
Email: andrew.a.grachev@gmail.com
Astrakhanskaya Str., 83, Saratov, 410012 Russian Federation
A. Sadovnikov
Saratov National Research State University named after N.G. Chernyshevsky
Author for correspondence.
Email: andrew.a.grachev@gmail.com
Astrakhanskaya Str., 83, Saratov, 410012 Russian Federation
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