Berlin 2018 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 52: Poster II

MA 52.3: Poster

Donnerstag, 15. März 2018, 15:00–18:00, Poster C

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

The complex phenomenon arising after a magnetic film is excited by a femtosecond laser pulse is studied using a Monte Carlo trajectory simulation. In this stochastic model we will include not only spin-dependent scattering processes and spin-flip probabilities, but also the electron-electron interaction. The magnetization dynamics will be investigated by using a two-bands dynamic model and it will be first applied to the case of Nickel. The results of this simulation contain the time evolution of the electron number, their energy distribution, the 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.