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C. Abert, G. Hrkac, D. Praetorius, M. Ruggeri, D. Süss:
"Self-consistent computation of magnetization dynamics in the presence of spin-polarized currents";
Talk: 10th International Symposium on Hysteresis Modeling and Micromagnetics, Iasi (Romania); 2015-05-18 - 2015-05-20.

We propose a model for self-consistent computations of the magnetization dynamics in the presence of spin-polarized currents, which extends the model from Zhang et al. to full three-dimensional systems. The nonlinear system of equations consists of the Landau-Lifshitz-Gilbert equation, an elliptic equation to model the spin accumulation in the stationary regime, and an equation for the electric potential derived from the Maxwell equations. The system is discretized by a numerical method which combines finite elements and boundary elements, for which we show some preliminary convergence results. The presented model accounts for nonlocal spin-torque contributions due to spin diffusion and describes composite material structures in a self-consistent manner. The model solves for the magnetization dynamics as well as the electric current and spin accumulation and only requires the initial magnetization configuration and the electric potential on the boundary as input parameters.