Ultrafast spin-lattice relaxation in ferromagnets including effective spin-orbit fields

Abstract

We investigate ultrafast demagnetization due to electron-phonon interaction in a model band-ferromagnet. We show that the microscopic mechanism behind the spin dynamics due to electron-phonon interaction is the interplay of scattering and the precession around momentum-dependent effective internal spin-orbit magnetic fields. The resulting magnetization dynamics can only be mimicked by spin-flip transitions if the spin precession around the internal fields is sufficiently fast (compared to the scattering time) so that it averages out the transverse spin components.

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Cited by in corpus (5)

• Tuning the laser-induced ultrafast demagnetization of transition metals
• Ultrafast electron dynamics in altermagnetic materials
• Off-resonant all-optical switching dynamics in a ferromagnetic model system
• Ultrafast electron-phonon scattering in antiferromagnetic Dirac semimetals
• Interplay of electron-magnon scattering and spin-orbit induced electronic spin-flip scattering in a two-band Stoner model