Linearly polarized GHz magnetization dynamics of spin helix modes in the ferrimagnetic insulator Cu2OSeO3

Abstract Linear dichroism — the polarization dependent absorption of electromagnetic waves— is routinely exploited in applications as diverse as structure determination of DNA or polarization filters in optical technologies. Here filamentary absorbers with a large length-to-width ratio are a prerequ...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	I. Stasinopoulos, S. Weichselbaumer, A. Bauer, J. Waizner, H. Berger, M. Garst, C. Pfleiderer, D. Grundler
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fde87160c5ed4fdfa18f25a5b8c5f5b5
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:fde87160c5ed4fdfa18f25a5b8c5f5b5
record_format	dspace
spelling	oai:doaj.org-article:fde87160c5ed4fdfa18f25a5b8c5f5b52021-12-02T15:06:22ZLinearly polarized GHz magnetization dynamics of spin helix modes in the ferrimagnetic insulator Cu2OSeO310.1038/s41598-017-07020-22045-2322https://doaj.org/article/fde87160c5ed4fdfa18f25a5b8c5f5b52017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07020-2https://doaj.org/toc/2045-2322Abstract Linear dichroism — the polarization dependent absorption of electromagnetic waves— is routinely exploited in applications as diverse as structure determination of DNA or polarization filters in optical technologies. Here filamentary absorbers with a large length-to-width ratio are a prerequisite. For magnetization dynamics in the few GHz frequency regime strictly linear dichroism was not observed for more than eight decades. Here, we show that the bulk chiral magnet Cu2OSeO3 exhibits linearly polarized magnetization dynamics at an unexpectedly small frequency of about 2 GHz at zero magnetic field. Unlike optical filters that are assembled from filamentary absorbers, the magnet is shown to provide linear polarization as a bulk material for an extremely wide range of length-to-width ratios. In addition, the polarization plane of a given mode can be switched by 90° via a small variation in width. Our findings shed a new light on magnetization dynamics in that ferrimagnetic ordering combined with antisymmetric exchange interaction offers strictly linear polarization and cross-polarized modes for a broad spectrum of sample shapes at zero field. The discovery allows for novel design rules and optimization of microwave-to-magnon transduction in emerging microwave technologies.I. StasinopoulosS. WeichselbaumerA. BauerJ. WaiznerH. BergerM. GarstC. PfleidererD. GrundlerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q I. Stasinopoulos S. Weichselbaumer A. Bauer J. Waizner H. Berger M. Garst C. Pfleiderer D. Grundler Linearly polarized GHz magnetization dynamics of spin helix modes in the ferrimagnetic insulator Cu2OSeO3
description	Abstract Linear dichroism — the polarization dependent absorption of electromagnetic waves— is routinely exploited in applications as diverse as structure determination of DNA or polarization filters in optical technologies. Here filamentary absorbers with a large length-to-width ratio are a prerequisite. For magnetization dynamics in the few GHz frequency regime strictly linear dichroism was not observed for more than eight decades. Here, we show that the bulk chiral magnet Cu2OSeO3 exhibits linearly polarized magnetization dynamics at an unexpectedly small frequency of about 2 GHz at zero magnetic field. Unlike optical filters that are assembled from filamentary absorbers, the magnet is shown to provide linear polarization as a bulk material for an extremely wide range of length-to-width ratios. In addition, the polarization plane of a given mode can be switched by 90° via a small variation in width. Our findings shed a new light on magnetization dynamics in that ferrimagnetic ordering combined with antisymmetric exchange interaction offers strictly linear polarization and cross-polarized modes for a broad spectrum of sample shapes at zero field. The discovery allows for novel design rules and optimization of microwave-to-magnon transduction in emerging microwave technologies.
format	article
author	I. Stasinopoulos S. Weichselbaumer A. Bauer J. Waizner H. Berger M. Garst C. Pfleiderer D. Grundler
author_facet	I. Stasinopoulos S. Weichselbaumer A. Bauer J. Waizner H. Berger M. Garst C. Pfleiderer D. Grundler
author_sort	I. Stasinopoulos
title	Linearly polarized GHz magnetization dynamics of spin helix modes in the ferrimagnetic insulator Cu2OSeO3
title_short	Linearly polarized GHz magnetization dynamics of spin helix modes in the ferrimagnetic insulator Cu2OSeO3
title_full	Linearly polarized GHz magnetization dynamics of spin helix modes in the ferrimagnetic insulator Cu2OSeO3
title_fullStr	Linearly polarized GHz magnetization dynamics of spin helix modes in the ferrimagnetic insulator Cu2OSeO3
title_full_unstemmed	Linearly polarized GHz magnetization dynamics of spin helix modes in the ferrimagnetic insulator Cu2OSeO3
title_sort	linearly polarized ghz magnetization dynamics of spin helix modes in the ferrimagnetic insulator cu2oseo3
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/fde87160c5ed4fdfa18f25a5b8c5f5b5
work_keys_str_mv	AT istasinopoulos linearlypolarizedghzmagnetizationdynamicsofspinhelixmodesintheferrimagneticinsulatorcu2oseo3 AT sweichselbaumer linearlypolarizedghzmagnetizationdynamicsofspinhelixmodesintheferrimagneticinsulatorcu2oseo3 AT abauer linearlypolarizedghzmagnetizationdynamicsofspinhelixmodesintheferrimagneticinsulatorcu2oseo3 AT jwaizner linearlypolarizedghzmagnetizationdynamicsofspinhelixmodesintheferrimagneticinsulatorcu2oseo3 AT hberger linearlypolarizedghzmagnetizationdynamicsofspinhelixmodesintheferrimagneticinsulatorcu2oseo3 AT mgarst linearlypolarizedghzmagnetizationdynamicsofspinhelixmodesintheferrimagneticinsulatorcu2oseo3 AT cpfleiderer linearlypolarizedghzmagnetizationdynamicsofspinhelixmodesintheferrimagneticinsulatorcu2oseo3 AT dgrundler linearlypolarizedghzmagnetizationdynamicsofspinhelixmodesintheferrimagneticinsulatorcu2oseo3
_version_	1718388491327373312

Linearly polarized GHz magnetization dynamics of spin helix modes in the ferrimagnetic insulator Cu2OSeO3

Ejemplares similares