Pump-induced magnon anticrossing due to three-magnon splitting and confluence
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866912366253309952 |
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| author | Qu, Tao Xiong, Yuzan Zhang, Xufeng Li, Yi Zhang, Wei |
| author_facet | Qu, Tao Xiong, Yuzan Zhang, Xufeng Li, Yi Zhang, Wei |
| contents | We present a plausible mechanism for achieving magnon-magnon level repulsion spectrum originating from the oscillation between the splitting and confluence in a three-magnon scattering process. When a magnetostatic mode on a YIG sphere is pumped by a microwave signal near the magnon resonance frequency with an increasing amplitude, the generated magnon condensate at half of the pumping frequency exerts a back-action to the original magnon mode. Such a strong nonlinear coupling manifests a striking feature of a 'bending effect' of the magnetostatic mode spectra, akin to the anti-crossing observed in a strongly coupled magnon-photon system. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_04783 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Pump-induced magnon anticrossing due to three-magnon splitting and confluence Qu, Tao Xiong, Yuzan Zhang, Xufeng Li, Yi Zhang, Wei Mesoscale and Nanoscale Physics We present a plausible mechanism for achieving magnon-magnon level repulsion spectrum originating from the oscillation between the splitting and confluence in a three-magnon scattering process. When a magnetostatic mode on a YIG sphere is pumped by a microwave signal near the magnon resonance frequency with an increasing amplitude, the generated magnon condensate at half of the pumping frequency exerts a back-action to the original magnon mode. Such a strong nonlinear coupling manifests a striking feature of a 'bending effect' of the magnetostatic mode spectra, akin to the anti-crossing observed in a strongly coupled magnon-photon system. |
| title | Pump-induced magnon anticrossing due to three-magnon splitting and confluence |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2505.04783 |