Nonreciprocal spin wave channeling in ferromagnetic/heavy-metal nanostrips

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dc.contributor.authorR.A. Gallardo
dc.contributor.authorP. Alvarado Seguel
dc.contributor.authorF. Brevis
dc.contributor.authorC. Gonzalez-Fuentes
dc.contributor.authorJ.W. González
dc.contributor.authorK. Lenz
dc.contributor.authorJ. Lindner
dc.contributor.authorA. Roldán-Molina
dc.date.accessioned2026-03-16T13:44:02Z
dc.date.available2026-03-16T13:44:02Z
dc.date.issued2024
dc.description.abstractNonreciprocity, unidirectionality, and channeling are essential concepts for potential magnonic applications. Nonreciprocity and unidirectionality ensure the efficient propagation of spin waves along predetermined paths with preferential directions, disrupting the symmetry of counterpropagating waves. Channeling fosters the development of intricate spin-wave networks, enabling more sophisticated functionalities. Integrating these concepts into practical applications will shape the future of spin-wave-based information processing devices. This article theoretically studies the dynamics of spin waves in a ferromagnetic strip coupled to a heavy-metal strip, where the nonreciprocity, unidirectionality, and channeling effects are analyzed. Both backward volume (BV) and Damon–Eshbach (DE) configurations are considered, where the lateral dimensions of the heavy-metal and ferromagnetic strips can differ. Calculations show notable nonreciprocal channeling of spin waves in both DE and BV modes. In the BV configuration, the dispersion is reciprocal with nontrivial localization of lateral confined modes. It is shown that the waves can be channeled into the zones in contact with the HM, where the Dzyaloshinskii–Moriya interaction is active. In the DE configuration, the waves exhibit nonreciprocal spin-wave dispersion, allowing unidirectional and channeled spin-wave propagation. The main results are compared to micromagnetic simulations, where an excellent agreement between both methods is obtained. These findings are relevant for envisioning advanced magnonic devices, enabling precise control over spin-wave propagation for innovative, low-power, high-speed information processing.
dc.description.sponsorshipFondecyt Grants 1210607, 11220854, 1220700 and 1221301. ANID PhD through Fellowship No. 2021-21211469.
dc.identifier.doi10.1016/j.rinp.2024.108057
dc.identifier.issn22113797
dc.identifier.urihttps://repositorioabierto.uantof.cl/handle/uantof/657
dc.language.isoen
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.sourceResults in Physics
dc.titleNonreciprocal spin wave channeling in ferromagnetic/heavy-metal nanostrips
dc.typeArticle
oaire.citation.volume67
organization.identifier.rorUniversidad de Antofagasta
uantof.identificator.departmentDepartamento de Física
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