Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2603.10770 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866908879093235712 |
|---|---|
| author | An, Kang Hao, Zhenhui Shi, Yongzhang Zhu, Yingjie Li, Xiling Zhang, Chi Chai, Guozhi |
| author_facet | An, Kang Hao, Zhenhui Shi, Yongzhang Zhu, Yingjie Li, Xiling Zhang, Chi Chai, Guozhi |
| contents | Magnon-photon coupling in cavity magnonic systems offers a promising route toward integrated wave-based information-processing devices. However, in ultrathin magnetic films the weak magnon response is easily buried beneath photon-dominated spectra. We show that a derivative-divide analysis of the microwave transmission parameter in a planar split-ring-resonator cavity isolates the magnetic contribution and resolves clear anticrossings in yttrium iron garnet and CoFeB films, yielding measurable coupling down to thicknesses of 60 nm and 5 nm, respectively. These results establish derivative-divide method as a simple and sensitive probe of magnon-photon coupling in ultrathin insulating and metallic films, and as a practical tool for characterizing miniaturized cavity-magnonic devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_10770 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Study of Magnon-Photon Coupling in Ultra-thin Films Using the Derivative-Divide Method An, Kang Hao, Zhenhui Shi, Yongzhang Zhu, Yingjie Li, Xiling Zhang, Chi Chai, Guozhi Applied Physics Magnon-photon coupling in cavity magnonic systems offers a promising route toward integrated wave-based information-processing devices. However, in ultrathin magnetic films the weak magnon response is easily buried beneath photon-dominated spectra. We show that a derivative-divide analysis of the microwave transmission parameter in a planar split-ring-resonator cavity isolates the magnetic contribution and resolves clear anticrossings in yttrium iron garnet and CoFeB films, yielding measurable coupling down to thicknesses of 60 nm and 5 nm, respectively. These results establish derivative-divide method as a simple and sensitive probe of magnon-photon coupling in ultrathin insulating and metallic films, and as a practical tool for characterizing miniaturized cavity-magnonic devices. |
| title | Study of Magnon-Photon Coupling in Ultra-thin Films Using the Derivative-Divide Method |
| topic | Applied Physics |
| url | https://arxiv.org/abs/2603.10770 |