Testing spin-flip scattering as a possible mechanism of ultrafast demagnetization in ordered magnetic alloys | Zendy

Stefan Günther | Zendy; Carlo Spezzani | Zendy; R. Ciprian | Zendy; Cesare Grazioli | Zendy; B. Ressel | Zendy; Marcello Coreno | Zendy; Luca Poletto | Zendy; Paolo Miotti | Zendy; M. Sacchi | Zendy; G. Panaccione | Zendy; Vojtěch Uhlíř | Zendy; Eric E. Fullerton | Zendy; G. De Ninno | Zendy; C. H. Back | Zendy

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Testing spin-flip scattering as a possible mechanism of ultrafast demagnetization in ordered magnetic alloys

Author(s) -

Stefan Günther,

Carlo 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,

C. H. Back

Publication year - 2014

Publication title -

physical review b

Language(s) - English

Resource type - Journals

eISSN - 1538-4489

pISSN - 1098-0121

DOI - 10.1103/physrevb.90.180407

Subject(s) - ultrashort pulse , condensed matter physics , demagnetizing field , alloy , materials science , scattering , spin (aerodynamics) , spin flip , quenching (fluorescence) , physics , magnetic field , 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

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