Spin wave-driven variable-phase mutual synchronization in spin Hall nano-oscillators
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866917887402311680 |
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| author | Kumar, Akash Chaurasiya, Avinash kumar González, Victor H. Behera, Nilamani Khymyn, Roman Awad, Ahmad A. Åkerman, Johan |
| author_facet | Kumar, Akash Chaurasiya, Avinash kumar González, Victor H. Behera, Nilamani Khymyn, Roman Awad, Ahmad A. Åkerman, Johan |
| contents | Spin-orbit torque can drive auto-oscillations of propagating spin wave (PSW) modes in nano-constriction spin Hall nano-oscillators (SHNOs). These modes allow both long-range coupling and the potential of controlling its phase -- critical aspect for nano-magnonics, spin wave logic, and Ising machines. Here, we demonstrate PSW-driven variable-phase coupling between two nano-constriction SHNOs and study how their separation and the PSW wave vector impact their mutual synchronization. In addition to ordinary in-phase mutual synchronization, we observe, using both electrical measurements and phase-resolved $μ-$Brillouin Light Scattering microscopy, mutual synchronization with a phase that can be tuned from 0 to $π$ using the drive current or the applied field. Micromagnetic simulations corroborate the experiments and visualize how the PSW patterns in the bridge connecting the two nano-constrictions govern the coupling. These results advance the capabilities of mutually synchronized SHNOs and open up new possibilities for applications in spin wave logic, unconventional computing, and Ising Machines. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_00586 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Spin wave-driven variable-phase mutual synchronization in spin Hall nano-oscillators Kumar, Akash Chaurasiya, Avinash kumar González, Victor H. Behera, Nilamani Khymyn, Roman Awad, Ahmad A. Åkerman, Johan Mesoscale and Nanoscale Physics Applied Physics Spin-orbit torque can drive auto-oscillations of propagating spin wave (PSW) modes in nano-constriction spin Hall nano-oscillators (SHNOs). These modes allow both long-range coupling and the potential of controlling its phase -- critical aspect for nano-magnonics, spin wave logic, and Ising machines. Here, we demonstrate PSW-driven variable-phase coupling between two nano-constriction SHNOs and study how their separation and the PSW wave vector impact their mutual synchronization. In addition to ordinary in-phase mutual synchronization, we observe, using both electrical measurements and phase-resolved $μ-$Brillouin Light Scattering microscopy, mutual synchronization with a phase that can be tuned from 0 to $π$ using the drive current or the applied field. Micromagnetic simulations corroborate the experiments and visualize how the PSW patterns in the bridge connecting the two nano-constrictions govern the coupling. These results advance the capabilities of mutually synchronized SHNOs and open up new possibilities for applications in spin wave logic, unconventional computing, and Ising Machines. |
| title | Spin wave-driven variable-phase mutual synchronization in spin Hall nano-oscillators |
| topic | Mesoscale and Nanoscale Physics Applied Physics |
| url | https://arxiv.org/abs/2402.00586 |