Symmetry and nonlinearity of spin wave resonance excited by focused surface acoustic waves
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arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| Soggetti: | |
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| _version_ | 1866914470178062336 |
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| author | Shah, Piyush J. Bas, Derek A. Hamadeh, Abbass Wolf, Michael Franson, Andrew Newburger, Michael Pirro, Philipp Weiler, Mathias Page, Michael R. |
| author_facet | Shah, Piyush J. Bas, Derek A. Hamadeh, Abbass Wolf, Michael Franson, Andrew Newburger, Michael Pirro, Philipp Weiler, Mathias Page, Michael R. |
| contents | The use of a complex ferromagnetic system to manipulate GHz surface acoustic waves is a rich current topic under investigation, but the high-power nonlinear regime is under-explored. We introduce focused surface acoustic waves, which provide a way to access this regime with modest equipment. Symmetry of the magneto-acoustic interaction can be tuned by interdigitated transducer design which can introduce additional strain components. Here, we compare the impact of focused acoustic waves versus standard unidirectional acoustic waves in significantly enhancing the magnon-phonon coupling behavior. Analytical simulation results based on modified Landau-Lifshitz-Gilbert theory show good agreement with experimental findings. We also report nonlinear input power dependence of the transmission through the device. This experimental observation is supported by the micromagnetic simulation using mumax3 to model the nonlinear dependence. These results pave the way for extending the understanding and design of acoustic wave devices for exploration of acoustically driven spin wave resonance physics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2305_06259 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Symmetry and nonlinearity of spin wave resonance excited by focused surface acoustic waves Shah, Piyush J. Bas, Derek A. Hamadeh, Abbass Wolf, Michael Franson, Andrew Newburger, Michael Pirro, Philipp Weiler, Mathias Page, Michael R. Materials Science Applied Physics The use of a complex ferromagnetic system to manipulate GHz surface acoustic waves is a rich current topic under investigation, but the high-power nonlinear regime is under-explored. We introduce focused surface acoustic waves, which provide a way to access this regime with modest equipment. Symmetry of the magneto-acoustic interaction can be tuned by interdigitated transducer design which can introduce additional strain components. Here, we compare the impact of focused acoustic waves versus standard unidirectional acoustic waves in significantly enhancing the magnon-phonon coupling behavior. Analytical simulation results based on modified Landau-Lifshitz-Gilbert theory show good agreement with experimental findings. We also report nonlinear input power dependence of the transmission through the device. This experimental observation is supported by the micromagnetic simulation using mumax3 to model the nonlinear dependence. These results pave the way for extending the understanding and design of acoustic wave devices for exploration of acoustically driven spin wave resonance physics. |
| title | Symmetry and nonlinearity of spin wave resonance excited by focused surface acoustic waves |
| topic | Materials Science Applied Physics |
| url | https://arxiv.org/abs/2305.06259 |