Open AccessTesting spin-flip scattering as a possible mechanism of ultrafast demagnetization in ordered magnetic alloys
Author(s) -
Stefan Günther,
C. Spezzani,
R. Ciprian,
Cesare Grazioli,
B. Ressel,
Marcello Coreno,
Luca Poletto,
Paolo Miotti,
M. Sacchi,
G. Panaccione,
Vojtěch Uhlíř,
Eric E. Fullerton,
G. De Ninno,
Christian Back
Publication year - 2014
Publication title -
physical review. b, condensed matter and materials physics
Language(s) - English
Resource type - Journals
eISSN - 1538-4489
pISSN - 1098-0121
DOI - 10.1103/physrevb.90.180407
Subject(s) - ultrashort pulse , demagnetizing field , alloy , materials science , condensed matter physics , scattering , quenching (fluorescence) , spin (aerodynamics) , spin flip , magnetic field , physics , optics , thermodynamics , magnetization , fluorescence , quantum mechanics , laser , composite material
International audienceWe use element-resolved IR-pump/extreme ultraviolet-probe experiments to disentangle the ultrafast interplay of the magnetic sublattices of an ordered crystalline magnetic alloy. As a paradigmatic example, we investigate the case of the FeRh alloy, which shows a delayed response for the different components. Furthermore, a detailed time-resolved magneto-optic study shows that the data can be analyzed by only assuming Elliot-Yafet-like scattering, as the underlying mechanism for ultrafast demagnetization, resulting in an unexpected nonmonotonic dependence of the spin-flip rate, as a function of quenching