Nonresonant amplification of spin waves through interface magnetoelectric effect and spin-transfer torque

Abstract We present a new mechanism for manipulation of the spin-wave amplitude through the use of the dynamic charge-mediated magnetoelectric effect in ultrathin multilayers composed of dielectric thin-film capacitors separated by a ferromagnetic bilayer. Propagating spin waves can be amplified and...

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Autores principales:	Piotr Graczyk, Maciej Krawczyk
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1773a95f7cc24d4588e12f154905fe19
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spelling	oai:doaj.org-article:1773a95f7cc24d4588e12f154905fe192021-12-02T17:06:25ZNonresonant amplification of spin waves through interface magnetoelectric effect and spin-transfer torque10.1038/s41598-021-95267-12045-2322https://doaj.org/article/1773a95f7cc24d4588e12f154905fe192021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95267-1https://doaj.org/toc/2045-2322Abstract We present a new mechanism for manipulation of the spin-wave amplitude through the use of the dynamic charge-mediated magnetoelectric effect in ultrathin multilayers composed of dielectric thin-film capacitors separated by a ferromagnetic bilayer. Propagating spin waves can be amplified and attenuated with rising and decreasing slopes of the oscillating voltage, respectively, locally applied to the sample. The way the spin accumulation is generated makes the interaction of the spin-transfer torque with the magnetization dynamics mode-selective and restricted to some range of spin-wave frequencies, which is contrary to known types of the spin-transfer torque effects. The interfacial nature of spin-dependent screening allows to reduce the thickness of the fixed magnetization layer to a few nanometers, thus the proposed effect significantly contributes toward realization of the magnonic devices and also miniaturization of the spintronic devices.Piotr GraczykMaciej KrawczykNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Piotr Graczyk Maciej Krawczyk Nonresonant amplification of spin waves through interface magnetoelectric effect and spin-transfer torque
description	Abstract We present a new mechanism for manipulation of the spin-wave amplitude through the use of the dynamic charge-mediated magnetoelectric effect in ultrathin multilayers composed of dielectric thin-film capacitors separated by a ferromagnetic bilayer. Propagating spin waves can be amplified and attenuated with rising and decreasing slopes of the oscillating voltage, respectively, locally applied to the sample. The way the spin accumulation is generated makes the interaction of the spin-transfer torque with the magnetization dynamics mode-selective and restricted to some range of spin-wave frequencies, which is contrary to known types of the spin-transfer torque effects. The interfacial nature of spin-dependent screening allows to reduce the thickness of the fixed magnetization layer to a few nanometers, thus the proposed effect significantly contributes toward realization of the magnonic devices and also miniaturization of the spintronic devices.
format	article
author	Piotr Graczyk Maciej Krawczyk
author_facet	Piotr Graczyk Maciej Krawczyk
author_sort	Piotr Graczyk
title	Nonresonant amplification of spin waves through interface magnetoelectric effect and spin-transfer torque
title_short	Nonresonant amplification of spin waves through interface magnetoelectric effect and spin-transfer torque
title_full	Nonresonant amplification of spin waves through interface magnetoelectric effect and spin-transfer torque
title_fullStr	Nonresonant amplification of spin waves through interface magnetoelectric effect and spin-transfer torque
title_full_unstemmed	Nonresonant amplification of spin waves through interface magnetoelectric effect and spin-transfer torque
title_sort	nonresonant amplification of spin waves through interface magnetoelectric effect and spin-transfer torque
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/1773a95f7cc24d4588e12f154905fe19
work_keys_str_mv	AT piotrgraczyk nonresonantamplificationofspinwavesthroughinterfacemagnetoelectriceffectandspintransfertorque AT maciejkrawczyk nonresonantamplificationofspinwavesthroughinterfacemagnetoelectriceffectandspintransfertorque
_version_	1718381599319392256

Nonresonant amplification of spin waves through interface magnetoelectric effect and spin-transfer torque

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