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MA: Fachverband Magnetismus

MA 36: Magnetization and Demagnetization Dynamics III

MA 36.1: Vortrag

Mittwoch, 9. März 2016, 15:00–15:15, H34

Influence of magneto-elastic coupling in magnetization dynamics — •Matthias Assmann and Ulrich Nowak — University Konstanz, 78457 Konstanz, Germany

For modern nanoscale devices a profound understanding of the atomistic interactions is crucial. Modern experiments have access to magnetization dynamics on femtosecond timescale as well as to phononic excitations. We developed therefore a model, which allows a coupling between these two thermodynamic sub-systems under strict observance of energy and angular momentum conservation laws. For this model we perform spin-molecular dynamics simulations, which take into account the spatial as well as the spin degrees of freedom. This coupling between the spin and lattice degrees of freedom is achieved by pseudo dipolar forces. These coupling contributes to various effects like damping, domain wall movement and magneto-volume effects.