Ferromagnetic domain walls as spin wave filters and the interplay between domain walls and spin waves

Abstract Spin waves (SW) are low energy excitations of magnetization in magnetic materials. In the promising field of magnonics, fundamental SW modes, magnons, are accessible in magnetic nanostructure waveguides and carry information. The SW propagates in both metals and insulators via magnetization...

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Autores principales:	Liang-Juan Chang, Yen-Fu Liu, Ming-Yi Kao, Li-Zai Tsai, Jun-Zhi Liang, Shang-Fan Lee
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/67286952617f4ad2aee444b888d8db66
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spelling	oai:doaj.org-article:67286952617f4ad2aee444b888d8db662021-12-02T15:09:07ZFerromagnetic domain walls as spin wave filters and the interplay between domain walls and spin waves10.1038/s41598-018-22272-22045-2322https://doaj.org/article/67286952617f4ad2aee444b888d8db662018-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-22272-2https://doaj.org/toc/2045-2322Abstract Spin waves (SW) are low energy excitations of magnetization in magnetic materials. In the promising field of magnonics, fundamental SW modes, magnons, are accessible in magnetic nanostructure waveguides and carry information. The SW propagates in both metals and insulators via magnetization dynamics. Energy dissipation through damping can be low compared to the Joule heating in conventional circuits. We performed simulations in a quasi-one-dimensional ferromagnetic strip and found that the transmission of the propagating SW across the domain wall (DW) depends strongly on the tilt angle of the magnetization at low frequencies. When the SW amplitude is large, the magnetization tilt angle inside the DW changes due to the effective fields. The SW transmission, the DW motion, and the magnetization tilt angle couple to each other, which results in complex DW motion and SW transmission. Both SW filtering and DW motions are key ingredients in magnonics.Liang-Juan ChangYen-Fu LiuMing-Yi KaoLi-Zai TsaiJun-Zhi LiangShang-Fan LeeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-7 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Liang-Juan Chang Yen-Fu Liu Ming-Yi Kao Li-Zai Tsai Jun-Zhi Liang Shang-Fan Lee Ferromagnetic domain walls as spin wave filters and the interplay between domain walls and spin waves
description	Abstract Spin waves (SW) are low energy excitations of magnetization in magnetic materials. In the promising field of magnonics, fundamental SW modes, magnons, are accessible in magnetic nanostructure waveguides and carry information. The SW propagates in both metals and insulators via magnetization dynamics. Energy dissipation through damping can be low compared to the Joule heating in conventional circuits. We performed simulations in a quasi-one-dimensional ferromagnetic strip and found that the transmission of the propagating SW across the domain wall (DW) depends strongly on the tilt angle of the magnetization at low frequencies. When the SW amplitude is large, the magnetization tilt angle inside the DW changes due to the effective fields. The SW transmission, the DW motion, and the magnetization tilt angle couple to each other, which results in complex DW motion and SW transmission. Both SW filtering and DW motions are key ingredients in magnonics.
format	article
author	Liang-Juan Chang Yen-Fu Liu Ming-Yi Kao Li-Zai Tsai Jun-Zhi Liang Shang-Fan Lee
author_facet	Liang-Juan Chang Yen-Fu Liu Ming-Yi Kao Li-Zai Tsai Jun-Zhi Liang Shang-Fan Lee
author_sort	Liang-Juan Chang
title	Ferromagnetic domain walls as spin wave filters and the interplay between domain walls and spin waves
title_short	Ferromagnetic domain walls as spin wave filters and the interplay between domain walls and spin waves
title_full	Ferromagnetic domain walls as spin wave filters and the interplay between domain walls and spin waves
title_fullStr	Ferromagnetic domain walls as spin wave filters and the interplay between domain walls and spin waves
title_full_unstemmed	Ferromagnetic domain walls as spin wave filters and the interplay between domain walls and spin waves
title_sort	ferromagnetic domain walls as spin wave filters and the interplay between domain walls and spin waves
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/67286952617f4ad2aee444b888d8db66
work_keys_str_mv	AT liangjuanchang ferromagneticdomainwallsasspinwavefiltersandtheinterplaybetweendomainwallsandspinwaves AT yenfuliu ferromagneticdomainwallsasspinwavefiltersandtheinterplaybetweendomainwallsandspinwaves AT mingyikao ferromagneticdomainwallsasspinwavefiltersandtheinterplaybetweendomainwallsandspinwaves AT lizaitsai ferromagneticdomainwallsasspinwavefiltersandtheinterplaybetweendomainwallsandspinwaves AT junzhiliang ferromagneticdomainwallsasspinwavefiltersandtheinterplaybetweendomainwallsandspinwaves AT shangfanlee ferromagneticdomainwallsasspinwavefiltersandtheinterplaybetweendomainwallsandspinwaves
_version_	1718387877897830400

Ferromagnetic domain walls as spin wave filters and the interplay between domain walls and spin waves

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