Measurements of ultrafast spin-profiles and spin-diffusion properties in the domain wall area at a metal/ferromagnetic film interface
Sant T, Ksenzov D, Capotondi F, Pedersoli E, Manfredda M, Kiskinova M, Zabel H, Klaeui M, Luning J, Pietsch U, Gutt C (2017)
Publication Type: Journal article
Publication year: 2017
Journal
Book Volume: 7
Article Number: 15064
Journal Issue: 1
DOI: 10.1038/s41598-017-15234-7
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.
Involved external institutions
Universität Siegen
Germany (DE)
Elettra Sincrotrone Trieste S.C.p.A.
Italy (IT)
Johannes Gutenberg-Universität Mainz (JGU)
Germany (DE)
University of Paris 6 - Pierre et Marie Curie / Université Paris VI Pierre et Marie Curie (UPMC)
France (FR)
Germany (DE)
Elettra Sincrotrone Trieste S.C.p.A.
Italy (IT)
Johannes Gutenberg-Universität Mainz (JGU)
Germany (DE)
University of Paris 6 - Pierre et Marie Curie / Université Paris VI Pierre et Marie Curie (UPMC)
France (FR)
How to cite
APA:
Sant, T., Ksenzov, D., Capotondi, F., Pedersoli, E., Manfredda, M., Kiskinova, M.,... Gutt, C. (2017). Measurements of ultrafast spin-profiles and spin-diffusion properties in the domain wall area at a metal/ferromagnetic film interface. Scientific Reports, 7(1). https://doi.org/10.1038/s41598-017-15234-7
MLA:
Sant, Tushar, et al. "Measurements of ultrafast spin-profiles and spin-diffusion properties in the domain wall area at a metal/ferromagnetic film interface." Scientific Reports 7.1 (2017).
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