Regensburg 2016 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 31: Magnetization and Demagnetization Dynamics II
MA 31.11: Vortrag
Mittwoch, 9. März 2016, 12:15–12:30, H34
Ultrafast magnetization dynamics in a spin-orbit coupled ferromagnetic system due to microscopical electron-phonon-scattering — •Kai Leckron1, Svenja Vollmar1, 2, and Hans Christian Schneider1 — 1University of Kaiserslautern — 2Graduate School of Excellence Materials Science in Mainz
We investigate the (de)magnetization dynamics due to electron-phonon scattering in a ferromagnetic Rashba model. We calculate the electronic spin-density matrix and explicitly show that the incoherent scattering due the electrostatic electron-phonon interaction, which is sometimes called the Elliott contribution to the Elliott-Yafet mechanism, does not lead to spin dynamics. We further analyze the influence of the other contributions to spin dynamics: the spin-dependent electron-phonon interaction and the coherent dynamics of off-diagonal elements of the spin-density matrix.