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Driving force of ultrafast magnetization dynamics
2011
New Journal of Physics
Irradiating a ferromagnetic material with an ultrashort laser pulse leads to demagnetization on the femtosecond timescale. We implement Elliott-Yafet-type spin-flip scattering, mediated by electron-electron and electron-phonon collisions, in the framework of a spin-resolved Boltzmann equation. Considering three mutually coupled reservoirs, (i) spin-up electrons, (ii) spin-down electrons and (iii) phonons, we trace non-equilibrium electron distributions during and after laser excitation. We
doi:10.1088/1367-2630/13/12/123010
fatcat:cwnj3evrabgm7fm45cyayvorvi