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arXiv · 1709.04253

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

Kai Leckron·Svenja Vollmar·Hans Christian Schneider
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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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Kai Leckron, Svenja Vollmar, Hans Christian Schneider. 2017-09-13. Ultrafast spin-lattice relaxation in ferromagnets including effective spin-orbit fields. https://doi.org/10.1103/physrevb.96.140408

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