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arXiv · 2602.10650

Nonlinear dynamics in magnonic Fabry-P\'{e}rot resonators: Low-power neuron-like activation and transmission suppression

Anton Lutsenko·Kevin G. Fripp·Lukáš Flajšman·Andrey V. Shytov·Volodymyr V. Kruglyak·Sebastiaan van Dijken
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Abstract

We report on nonlinear spin-wave dynamics in magnonic Fabry-P\'{e}rot resonators composed of yttrium iron garnet (YIG) films coupled to CoFeB nanostripes. Using super-Nyquist sampling magneto-optical Kerr effect microscopy and micromagnetic simulations, we observe a systematic downshift of the spin-wave transmission gaps as the excitation power increases. This nonlinear behavior occurs at low power levels, reduced by a strong spatial concentration of spin waves within the resonator. The resulting power-dependent transmission enables neuron-like activation behavior and frequency-selective nonlinear spin-wave absorption. Our results highlight magnonic Fabry-P\'{e}rot resonators as compact low-power nonlinear elements for neuromorphic magnonic computing architectures.

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Anton Lutsenko, Kevin G. Fripp, Lukáš Flajšman, Andrey V. Shytov, Volodymyr V. Kruglyak, Sebastiaan van Dijken. 2026-02-11. Nonlinear dynamics in magnonic Fabry-P\'{e}rot resonators: Low-power neuron-like activation and transmission suppression. https://arxiv.org/abs/2602.10650

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