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Tunable asymmetric spin wave excitation and propagation in a magnetic system with two rectangular blocks

Asymmetric spin wave excitation and propagation are key properties to develop spin-based electronics, such as magnetic memory, spin information and logic devices. To date, such nonreciprocal effects cannot be manipulated in a system because of the geometrical magnetic configuration, while large valu...

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Autores principales: Seo, Dongpyo, Hwang, S., Kim, Byungro, Yang, Yeonhee, Yoon, Seungha, Cho, B. K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8692326/
https://www.ncbi.nlm.nih.gov/pubmed/34934064
http://dx.doi.org/10.1038/s41598-021-02967-9
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author Seo, Dongpyo
Hwang, S.
Kim, Byungro
Yang, Yeonhee
Yoon, Seungha
Cho, B. K.
author_facet Seo, Dongpyo
Hwang, S.
Kim, Byungro
Yang, Yeonhee
Yoon, Seungha
Cho, B. K.
author_sort Seo, Dongpyo
collection PubMed
description Asymmetric spin wave excitation and propagation are key properties to develop spin-based electronics, such as magnetic memory, spin information and logic devices. To date, such nonreciprocal effects cannot be manipulated in a system because of the geometrical magnetic configuration, while large values of asymmetry ratio are achieved. In this study, we suggest a new magnetic system with two blocks, in which the asymmetric intensity ratio can be changed between 0.276 and 1.43 by adjusting the excitation frequency between 7.8 GHz and 9.4 GHz. Because the two blocks have different widths, they have their own spin wave excitation frequency ranges. Indeed, the spin wave intensities in the two blocks, detected by the Brillouin light scattering spectrum, were observed to be frequency-dependent, yielding tuneable asymmetry ratio. Thus, this study provides a new path to enhance the application of spin waves in spin-based electronics.
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spelling pubmed-86923262021-12-22 Tunable asymmetric spin wave excitation and propagation in a magnetic system with two rectangular blocks Seo, Dongpyo Hwang, S. Kim, Byungro Yang, Yeonhee Yoon, Seungha Cho, B. K. Sci Rep Article Asymmetric spin wave excitation and propagation are key properties to develop spin-based electronics, such as magnetic memory, spin information and logic devices. To date, such nonreciprocal effects cannot be manipulated in a system because of the geometrical magnetic configuration, while large values of asymmetry ratio are achieved. In this study, we suggest a new magnetic system with two blocks, in which the asymmetric intensity ratio can be changed between 0.276 and 1.43 by adjusting the excitation frequency between 7.8 GHz and 9.4 GHz. Because the two blocks have different widths, they have their own spin wave excitation frequency ranges. Indeed, the spin wave intensities in the two blocks, detected by the Brillouin light scattering spectrum, were observed to be frequency-dependent, yielding tuneable asymmetry ratio. Thus, this study provides a new path to enhance the application of spin waves in spin-based electronics. Nature Publishing Group UK 2021-12-21 /pmc/articles/PMC8692326/ /pubmed/34934064 http://dx.doi.org/10.1038/s41598-021-02967-9 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Seo, Dongpyo
Hwang, S.
Kim, Byungro
Yang, Yeonhee
Yoon, Seungha
Cho, B. K.
Tunable asymmetric spin wave excitation and propagation in a magnetic system with two rectangular blocks
title Tunable asymmetric spin wave excitation and propagation in a magnetic system with two rectangular blocks
title_full Tunable asymmetric spin wave excitation and propagation in a magnetic system with two rectangular blocks
title_fullStr Tunable asymmetric spin wave excitation and propagation in a magnetic system with two rectangular blocks
title_full_unstemmed Tunable asymmetric spin wave excitation and propagation in a magnetic system with two rectangular blocks
title_short Tunable asymmetric spin wave excitation and propagation in a magnetic system with two rectangular blocks
title_sort tunable asymmetric spin wave excitation and propagation in a magnetic system with two rectangular blocks
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8692326/
https://www.ncbi.nlm.nih.gov/pubmed/34934064
http://dx.doi.org/10.1038/s41598-021-02967-9
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