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MA: Fachverband Magnetismus

MA 11: Posters Magnetism III

MA 11.32: Poster

Mittwoch, 29. September 2021, 13:30–16:30, P

Monte Carlo simulation of ultrafast nonequilibrium spin and charge transport in iron — •Johan Briones, Hans Christian Schneider, and Bärbel Rethfeld — Department of Physics and Optimas Research Center, TU Kaiserslautern, Germany

Spin transport and spin dynamics after femtosecond laser pulse irradiation of iron (Fe) are studied using a kinetic Monte Carlo model. This model simulates spin dependent dynamics by taking into account elastic electron-lattice scattering, where only the direction of the excited electrons changes, and inelastic electron - electron scattering, where secondary electrons are generated. An analysis of the particle kinetics inside the material shows that a smaller elastic scattering time affects the spin dynamics by leading to a larger spatial spread of electrons in the material, whereas generation of secondary electrons affects the spin transport by increasing the propagation length of homogeneous spin polarization.