Parametric excitation and mode control using an Oersted field in a NiFe nanowire

Abstract Parametric pumping is a nonlinear wave phenomenon and a promising technique for electronic devices based on spin waves, so-called “magnonics”. For parametric excitation, a magnetic nanowire system that has a built-in dc current line to produce an Oersted field is designed, and for spin wave...

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Autores principales:	S. Hwang, Seungha Yoon, Dongpyo Seo, S. H. Han, B. K. Cho
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/71cf072bdfcd4352b445db1582d5e659
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spelling	oai:doaj.org-article:71cf072bdfcd4352b445db1582d5e6592021-12-02T16:14:47ZParametric excitation and mode control using an Oersted field in a NiFe nanowire10.1038/s41598-021-92149-42045-2322https://doaj.org/article/71cf072bdfcd4352b445db1582d5e6592021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92149-4https://doaj.org/toc/2045-2322Abstract Parametric pumping is a nonlinear wave phenomenon and a promising technique for electronic devices based on spin waves, so-called “magnonics”. For parametric excitation, a magnetic nanowire system that has a built-in dc current line to produce an Oersted field is designed, and for spin wave detection, a micro-Brillouin light scattering (μ-BLS) system is used. A spin wave with a frequency of f sw = 5.6 GHz is observed when a pumping microwave with a frequency of f mw = 11.2 GHz is applied. The wave is found to be of the n = 1 width mode (n is the antinode number), and its mode changes to an edge-localized (or possibly n > 1) mode when the Oersted field (or current) varies. Joule heating effects are not observed in the pumping process. Thus, spin wave mode control by the built-in current would be a convenient and useful method to enhance the efficiency and compatibility in applications of spin-based electronics.S. HwangSeungha YoonDongpyo SeoS. H. HanB. K. ChoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q S. Hwang Seungha Yoon Dongpyo Seo S. H. Han B. K. Cho Parametric excitation and mode control using an Oersted field in a NiFe nanowire
description	Abstract Parametric pumping is a nonlinear wave phenomenon and a promising technique for electronic devices based on spin waves, so-called “magnonics”. For parametric excitation, a magnetic nanowire system that has a built-in dc current line to produce an Oersted field is designed, and for spin wave detection, a micro-Brillouin light scattering (μ-BLS) system is used. A spin wave with a frequency of f sw = 5.6 GHz is observed when a pumping microwave with a frequency of f mw = 11.2 GHz is applied. The wave is found to be of the n = 1 width mode (n is the antinode number), and its mode changes to an edge-localized (or possibly n > 1) mode when the Oersted field (or current) varies. Joule heating effects are not observed in the pumping process. Thus, spin wave mode control by the built-in current would be a convenient and useful method to enhance the efficiency and compatibility in applications of spin-based electronics.
format	article
author	S. Hwang Seungha Yoon Dongpyo Seo S. H. Han B. K. Cho
author_facet	S. Hwang Seungha Yoon Dongpyo Seo S. H. Han B. K. Cho
author_sort	S. Hwang
title	Parametric excitation and mode control using an Oersted field in a NiFe nanowire
title_short	Parametric excitation and mode control using an Oersted field in a NiFe nanowire
title_full	Parametric excitation and mode control using an Oersted field in a NiFe nanowire
title_fullStr	Parametric excitation and mode control using an Oersted field in a NiFe nanowire
title_full_unstemmed	Parametric excitation and mode control using an Oersted field in a NiFe nanowire
title_sort	parametric excitation and mode control using an oersted field in a nife nanowire
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/71cf072bdfcd4352b445db1582d5e659
work_keys_str_mv	AT shwang parametricexcitationandmodecontrolusinganoerstedfieldinanifenanowire AT seunghayoon parametricexcitationandmodecontrolusinganoerstedfieldinanifenanowire AT dongpyoseo parametricexcitationandmodecontrolusinganoerstedfieldinanifenanowire AT shhan parametricexcitationandmodecontrolusinganoerstedfieldinanifenanowire AT bkcho parametricexcitationandmodecontrolusinganoerstedfieldinanifenanowire
_version_	1718384297297051648

Parametric excitation and mode control using an Oersted field in a NiFe nanowire

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