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MA: Fachverband Magnetismus

MA 63: Spin: Transport, Orbitronics and Hall Effects III

MA 63.10: Vortrag

Freitag, 20. März 2020, 12:00–12:15, HSZ 403

Monte Carlo simulation of spin dynamics and spin transport in Iron (Fe) after femtosecond laser pulse irradiation — •Johan Briones, Sebastian Weber, Sanjay Ashok, and Baerbel Rethfeld — Department of Physics and Optimas Research Center, University of Kaiserslautern, Germany

The potential use of electronic spin, rather than charge, as carrier of information has brought into consideration the importance of understanding the complex phenomena of spin transport arising after a magnetic film is excited by a femtosecond laser pulse. After laser exciting the metalic ferromagnet, modeled by a spin-dependent density of states, we trace individual electrons undergoing multiple individual scatterings using a kinetic Monte Carlo model. We analyze the spin dynamics by considering the generation of secondary electrons (electronic cascade) and the exchange scattering as a spin-flip mechanism. The simulation has been performed for Fe and we discuss the implications of our results for the spin transport.