Effects of magnonic Kerr nonlinearity on magnon-polaritons with a soft-mode

• URL: http://arxiv.org/abs/2602.12550v1
• Date: Fri, 13 Feb 2026 02:57:49 GMT
• Title: Effects of magnonic Kerr nonlinearity on magnon-polaritons with a soft-mode
• Authors: Takahiro Chiba,
• Abstract summary: We study the effects of magnonic Kerr nonlinearity on magnon-polaritons (MPs) with a soft-mode in easy-axis ferromagnets coupled to a microwave cavity.<n>We show that chaotic and frequency-comb-like behaviors of MPs emerge at the original modes crossing point.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We theoretically study the effects of magnonic Kerr nonlinearity on magnon-polaritons (MPs) with a soft-mode in easy-axis ferromagnets coupled to a microwave cavity. Using an effective circuit model capable of describing MPs up to the nonperturbative strong-coupling regime, we show that chaotic and frequency-comb-like behaviors of MPs emerge at the original modes crossing point. Furthermore, we demonstrate that the Kerr nonlinearity induces a finite excitation gap in the soft-mode, particularly in the strong-coupling regime.

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