Effects of magnonic Kerr nonlinearity on magnon-polaritons with a soft-mode
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866917272346427392 |
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| author | Chiba, Takahiro |
| author_facet | Chiba, Takahiro |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_12550 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Effects of magnonic Kerr nonlinearity on magnon-polaritons with a soft-mode Chiba, Takahiro Mesoscale and Nanoscale Physics Chaotic Dynamics Quantum Physics 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. |
| title | Effects of magnonic Kerr nonlinearity on magnon-polaritons with a soft-mode |
| topic | Mesoscale and Nanoscale Physics Chaotic Dynamics Quantum Physics |
| url | https://arxiv.org/abs/2602.12550 |