We solve a time-dependent three-dimensional spin-diffusion model coupled to the Landau-Lifshitz-Gilbert equation numerically. The presented model is validated by comparison to two established spin-torque models: The model of Slonzewski that describes spin-torque in multi-layer structures in the presence of a fixed layer and the model of Zhang and Li that describes current driven domain-wall motion. It is shown that both models are incorporated by the spin-diffusion description, i.e., the nonlocal effects of the Slonzewski model are captured as well as the spin-accumulation due to magnetization gradients as described by the model of Zhang and Li. Moreover, the presented method is able to resolve the time dependency of the spin-accumulation.

Abert C., Ruggeri M., Bruckner F., Vogler C., Hrkac G., Praetorius D., et al. (2015). A three-dimensional spin-diffusion model for micromagnetics. SCIENTIFIC REPORTS, 5(1), 1-11 [10.1038/srep14855].

A three-dimensional spin-diffusion model for micromagnetics

Ruggeri M.;
2015

Abstract

We solve a time-dependent three-dimensional spin-diffusion model coupled to the Landau-Lifshitz-Gilbert equation numerically. The presented model is validated by comparison to two established spin-torque models: The model of Slonzewski that describes spin-torque in multi-layer structures in the presence of a fixed layer and the model of Zhang and Li that describes current driven domain-wall motion. It is shown that both models are incorporated by the spin-diffusion description, i.e., the nonlocal effects of the Slonzewski model are captured as well as the spin-accumulation due to magnetization gradients as described by the model of Zhang and Li. Moreover, the presented method is able to resolve the time dependency of the spin-accumulation.
2015
Abert C., Ruggeri M., Bruckner F., Vogler C., Hrkac G., Praetorius D., et al. (2015). A three-dimensional spin-diffusion model for micromagnetics. SCIENTIFIC REPORTS, 5(1), 1-11 [10.1038/srep14855].
Abert C.; Ruggeri M.; Bruckner F.; Vogler C.; Hrkac G.; Praetorius D.; Suess D.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/944122
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