Mode-dependent magnonic noise
Abstract The performance of magnonic devices such as converters, switches, and multiplexers greatly depends on magnonic noise. While a peculiar discrete magnonic noise has been previously reported, the sources of underlying magnon dynamics occurring in high-magnon density conditions have not been cl...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-01-01
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| Series: | NPG Asia Materials |
| Online Access: | https://doi.org/10.1038/s41427-023-00522-8 |
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| _version_ | 1832594604920143872 |
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| author | Ryo Furukawa Shoki Nezu Takuro Eguchi Koji Sekiguchi |
| author_facet | Ryo Furukawa Shoki Nezu Takuro Eguchi Koji Sekiguchi |
| author_sort | Ryo Furukawa |
| collection | DOAJ |
| description | Abstract The performance of magnonic devices such as converters, switches, and multiplexers greatly depends on magnonic noise. While a peculiar discrete magnonic noise has been previously reported, the sources of underlying magnon dynamics occurring in high-magnon density conditions have not been clarified. Here, zero-span measurements of the spectrum analyzer were recorded to accurately detect magnonic noise as a fluctuation of the spin-wave amplitude. The results of low-frequency magnonic noise demonstrated a spin-wave mode dependency, indicating the existence of a peculiar magnon surface state. Furthermore, the energy thresholds of four-magnon scattering and autooscillation were determined using magnonic white noise. The noise data obtained in this study can help promote theoretical and experimental research on magnons. |
| format | Article |
| id | doaj-art-207a7b1a08a64d2f9c4e1e0b503c4d59 |
| institution | Kabale University |
| issn | 1884-4057 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | NPG Asia Materials |
| spelling | doaj-art-207a7b1a08a64d2f9c4e1e0b503c4d592025-01-19T12:28:31ZengNature PortfolioNPG Asia Materials1884-40572024-01-0116111010.1038/s41427-023-00522-8Mode-dependent magnonic noiseRyo Furukawa0Shoki Nezu1Takuro Eguchi2Koji Sekiguchi3Graduate School of Engineering Science, Yokohama National UniversityGraduate School of Engineering Science, Yokohama National UniversityGraduate School of Engineering Science, Yokohama National UniversityInstitute of Advanced Science, Yokohama National UniversityAbstract The performance of magnonic devices such as converters, switches, and multiplexers greatly depends on magnonic noise. While a peculiar discrete magnonic noise has been previously reported, the sources of underlying magnon dynamics occurring in high-magnon density conditions have not been clarified. Here, zero-span measurements of the spectrum analyzer were recorded to accurately detect magnonic noise as a fluctuation of the spin-wave amplitude. The results of low-frequency magnonic noise demonstrated a spin-wave mode dependency, indicating the existence of a peculiar magnon surface state. Furthermore, the energy thresholds of four-magnon scattering and autooscillation were determined using magnonic white noise. The noise data obtained in this study can help promote theoretical and experimental research on magnons.https://doi.org/10.1038/s41427-023-00522-8 |
| spellingShingle | Ryo Furukawa Shoki Nezu Takuro Eguchi Koji Sekiguchi Mode-dependent magnonic noise NPG Asia Materials |
| title | Mode-dependent magnonic noise |
| title_full | Mode-dependent magnonic noise |
| title_fullStr | Mode-dependent magnonic noise |
| title_full_unstemmed | Mode-dependent magnonic noise |
| title_short | Mode-dependent magnonic noise |
| title_sort | mode dependent magnonic noise |
| url | https://doi.org/10.1038/s41427-023-00522-8 |
| work_keys_str_mv | AT ryofurukawa modedependentmagnonicnoise AT shokinezu modedependentmagnonicnoise AT takuroeguchi modedependentmagnonicnoise AT kojisekiguchi modedependentmagnonicnoise |