Measurements of ultrafast spin-profiles and spin-diffusion properties in the domain wall area at a metal/ferromagnetic film interface

Abstract Exciting a ferromagnetic material with an ultrashort IR laser pulse is known to induce spin dynamics by heating the spin system and by ultrafast spin diffusion processes. Here, we report on measurements of spin-profiles and spin diffusion properties in the vicinity of domain walls in the in...

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Autores principales:	T. Sant, D. Ksenzov, F. Capotondi, E. Pedersoli, M. Manfredda, M. Kiskinova, H. Zabel, M. Kläui, J. Lüning, U. Pietsch, C. Gutt
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/52c2298e803b49359a11d9df616bd8c8
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spelling	oai:doaj.org-article:52c2298e803b49359a11d9df616bd8c82021-12-02T15:04:58ZMeasurements of ultrafast spin-profiles and spin-diffusion properties in the domain wall area at a metal/ferromagnetic film interface10.1038/s41598-017-15234-72045-2322https://doaj.org/article/52c2298e803b49359a11d9df616bd8c82017-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-15234-7https://doaj.org/toc/2045-2322Abstract Exciting a ferromagnetic material with an ultrashort IR laser pulse is known to induce spin dynamics by heating the spin system and by ultrafast spin diffusion processes. Here, we report on measurements of spin-profiles and spin diffusion properties in the vicinity of domain walls in the interface region between a metallic Al layer and a ferromagnetic Co/Pd thin film upon IR excitation. We followed the ultrafast temporal evolution by means of an ultrafast resonant magnetic scattering experiment in surface scattering geometry, which enables us to exploit the evolution of the domain network within a 1/e distance of 3 nm to 5 nm from the Al/FM film interface. We observe a magnetization-reversal close to the domain wall boundaries that becomes more pronounced closer to the Al/FM film interface. This magnetization-reversal is driven by the different transport properties of majority and minority carriers through a magnetically disordered domain network. Its finite lateral extension has allowed us to measure the ultrafast spin-diffusion coefficients and ultrafast spin velocities for majority and minority carriers upon IR excitation.T. SantD. KsenzovF. CapotondiE. PedersoliM. ManfreddaM. KiskinovaH. ZabelM. KläuiJ. LüningU. PietschC. GuttNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q T. Sant D. Ksenzov F. Capotondi E. Pedersoli M. Manfredda M. Kiskinova H. Zabel M. Kläui J. Lüning U. Pietsch C. Gutt Measurements of ultrafast spin-profiles and spin-diffusion properties in the domain wall area at a metal/ferromagnetic film interface
description	Abstract Exciting a ferromagnetic material with an ultrashort IR laser pulse is known to induce spin dynamics by heating the spin system and by ultrafast spin diffusion processes. Here, we report on measurements of spin-profiles and spin diffusion properties in the vicinity of domain walls in the interface region between a metallic Al layer and a ferromagnetic Co/Pd thin film upon IR excitation. We followed the ultrafast temporal evolution by means of an ultrafast resonant magnetic scattering experiment in surface scattering geometry, which enables us to exploit the evolution of the domain network within a 1/e distance of 3 nm to 5 nm from the Al/FM film interface. We observe a magnetization-reversal close to the domain wall boundaries that becomes more pronounced closer to the Al/FM film interface. This magnetization-reversal is driven by the different transport properties of majority and minority carriers through a magnetically disordered domain network. Its finite lateral extension has allowed us to measure the ultrafast spin-diffusion coefficients and ultrafast spin velocities for majority and minority carriers upon IR excitation.
format	article
author	T. Sant D. Ksenzov F. Capotondi E. Pedersoli M. Manfredda M. Kiskinova H. Zabel M. Kläui J. Lüning U. Pietsch C. Gutt
author_facet	T. Sant D. Ksenzov F. Capotondi E. Pedersoli M. Manfredda M. Kiskinova H. Zabel M. Kläui J. Lüning U. Pietsch C. Gutt
author_sort	T. Sant
title	Measurements of ultrafast spin-profiles and spin-diffusion properties in the domain wall area at a metal/ferromagnetic film interface
title_short	Measurements of ultrafast spin-profiles and spin-diffusion properties in the domain wall area at a metal/ferromagnetic film interface
title_full	Measurements of ultrafast spin-profiles and spin-diffusion properties in the domain wall area at a metal/ferromagnetic film interface
title_fullStr	Measurements of ultrafast spin-profiles and spin-diffusion properties in the domain wall area at a metal/ferromagnetic film interface
title_full_unstemmed	Measurements of ultrafast spin-profiles and spin-diffusion properties in the domain wall area at a metal/ferromagnetic film interface
title_sort	measurements of ultrafast spin-profiles and spin-diffusion properties in the domain wall area at a metal/ferromagnetic film interface
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/52c2298e803b49359a11d9df616bd8c8
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Measurements of ultrafast spin-profiles and spin-diffusion properties in the domain wall area at a metal/ferromagnetic film interface

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