Nonlinear chiral magnonic resonators: Toward magnonic neurons
dc.contributor.author | Fripp, KG | |
dc.contributor.author | Au, Y | |
dc.contributor.author | Shytov, AV | |
dc.contributor.author | Kruglyak, VV | |
dc.date.accessioned | 2023-05-09T08:38:32Z | |
dc.date.issued | 2023-04-24 | |
dc.date.updated | 2023-05-08T16:41:13Z | |
dc.description.abstract | We explore chiral magnonic resonators as building blocks of artificial neural networks. Via micromagnetic simulations and analytical modeling, we demonstrate that the spin-wave modes confined in the resonators exhibit a strongly nonlinear response owing to energy concentration when resonantly excited by incoming spin waves. This effect may be harnessed to implement an artificial neuron in a network. Therefore, the confined and propagating spin-wave modes can serve as neurons and interneural connections, respectively. For modest excitation levels, the effect can be described in terms of a nonlinear shift of the resonant frequency (“detuning”), which results in amplitude-dependent transmission of monochromatic spin waves, which may be harnessed to recreate a “sigmoid-like” activation function. At even stronger excitation levels, the nonlinearity leads to bistability and hysteresis, akin to those occurring in nonlinear oscillators when the excitation strength exceeds a threshold set by the decay rate of the mode. In magnonic resonators, the latter includes both the Gilbert damping and the radiative decay due to the coupling with the medium. The results of our simulations are well described by a phenomenological model in which the nonlinear detuning of the confined mode is quadratic in its amplitude, while the propagation in the medium is linear. | en_GB |
dc.description.sponsorship | UKRI | en_GB |
dc.description.sponsorship | Horizon Europe | en_GB |
dc.description.sponsorship | Engineering and Physical Sciences Research Council (EPSRC) | en_GB |
dc.format.extent | 172403- | |
dc.identifier.citation | Vol. 122(17), article 172403 | en_GB |
dc.identifier.doi | https://doi.org/10.1063/5.0149466 | |
dc.identifier.grantnumber | 10039217 | en_GB |
dc.identifier.grantnumber | 101070347 | en_GB |
dc.identifier.grantnumber | EP/L019876/1 | en_GB |
dc.identifier.grantnumber | EP/T016574/1 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/133102 | |
dc.identifier | ORCID: 0000-0002-4674-8124 (Shytov, AV) | |
dc.identifier | ORCID: 0000-0001-6607-0886 (Kruglyak, VV) | |
dc.identifier | ScopusID: 6701455792 (Kruglyak, VV) | |
dc.language.iso | en | en_GB |
dc.publisher | AIP Publishing | en_GB |
dc.rights | © 2023 Author(s). Open access. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/) | en_GB |
dc.title | Nonlinear chiral magnonic resonators: Toward magnonic neurons | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2023-05-09T08:38:32Z | |
dc.identifier.issn | 0003-6951 | |
dc.description | This is the final version. Available on open access from AIP Publishing via the DOI in this record | en_GB |
dc.description | Data availability: The data that support the findings of this study are available within the article and its supplementary material. | en_GB |
dc.identifier.eissn | 1077-3118 | |
dc.identifier.journal | Applied Physics Letters | en_GB |
dc.relation.ispartof | Applied Physics Letters, 122(17) | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_GB |
dcterms.dateAccepted | 2024-04-09 | |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2023-04-24 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2023-05-09T08:35:03Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2023-05-09T08:38:37Z | |
refterms.panel | B | en_GB |
refterms.dateFirstOnline | 2023-04-24 |
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Except where otherwise noted, this item's licence is described as © 2023 Author(s). Open access. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/)