Dresden 2017 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 23: Spin Dynamics and Transport: Ultrafast Effect

MA 23.10: Vortrag

Dienstag, 21. März 2017, 12:00–12:15, HSZ 403

Monte Carlo simulation of the non-equilibrium spin dynamics — •Johan Briones and Baerbel Rethfeld — Department of Physics and Optimas Research Center, University of Kaiserslautern, Germany

A Monte Carlo simulation model will be developed in order to study the ultrafast demagnetization process due to the interaction of an ultrashort laser pulse with a ferromagnetic material. In this stochastic model, the electron-electron interaction will be considered, as well as spin-dependent inelastic and elastic scattering processes. Furthermore, the magnetization dynamics will be investigated by using a two-bands dynamic model. The model will be first applied to the case of Nickel. The results of this simulation will provide information regarding the time evolution of the electron number, energy distribution, energy dissipation and the quenching of the magnetization.

The long-term perspective of this project is to develop a model that can describe the non-equilibrium transport and its effect on magnetization dynamics.