Tuning Magneto-Optical Zero-Reflection via Dual-Channel Hybrid Magnonics
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arXiv
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866908521264578560 |
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| author | Christy, Andrew Zhu, Yujie Li, Yi Xiong, Yuzan Qu, Tao Tsui, Frank Cahoon, James F. Yang, Binbin Hu, Jia-Mian Zhang, Wei |
| author_facet | Christy, Andrew Zhu, Yujie Li, Yi Xiong, Yuzan Qu, Tao Tsui, Frank Cahoon, James F. Yang, Binbin Hu, Jia-Mian Zhang, Wei |
| contents | Multi-channel coupling in hybrid systems makes an attractive testbed not only because of the distinct advantages entailed in each constituent mode, but also the opportunity to leverage interference among the various excitation pathways. Here, via combined analytical calculation and experiment, we demonstrate that the phase of the magnetization precession at the interface of a coupled yttrium iron garnet(YIG)/permalloy(Py) bilayer is collectively controlled by the microwave photon field torque and the interlayer exchange torque, manifesting a coherent, dual-channel excitation scheme that effectively tunes the magneto-optic spectrum. The different torque contributions vary with frequency, external bias field, and types of interlayer coupling between YIG and Py, which further results in destructive or constructive interferences between the two excitation channels, and hence, selective suppression or amplification of the hybridized magnon modes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_05022 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Tuning Magneto-Optical Zero-Reflection via Dual-Channel Hybrid Magnonics Christy, Andrew Zhu, Yujie Li, Yi Xiong, Yuzan Qu, Tao Tsui, Frank Cahoon, James F. Yang, Binbin Hu, Jia-Mian Zhang, Wei Materials Science Multi-channel coupling in hybrid systems makes an attractive testbed not only because of the distinct advantages entailed in each constituent mode, but also the opportunity to leverage interference among the various excitation pathways. Here, via combined analytical calculation and experiment, we demonstrate that the phase of the magnetization precession at the interface of a coupled yttrium iron garnet(YIG)/permalloy(Py) bilayer is collectively controlled by the microwave photon field torque and the interlayer exchange torque, manifesting a coherent, dual-channel excitation scheme that effectively tunes the magneto-optic spectrum. The different torque contributions vary with frequency, external bias field, and types of interlayer coupling between YIG and Py, which further results in destructive or constructive interferences between the two excitation channels, and hence, selective suppression or amplification of the hybridized magnon modes. |
| title | Tuning Magneto-Optical Zero-Reflection via Dual-Channel Hybrid Magnonics |
| topic | Materials Science |
| url | https://arxiv.org/abs/2509.05022 |