Current-induced domain wall motion including thermal effects based on Landau-Lifshitz-Bloch equation

Details Current-induced domain wall motion including thermal effects based on Landau-Lifshitz-Bloch equation Current-induced domain wall motion including thermal effects based on Landau-Lifshitz-Bloch equation

2009-09-28

arxiv.org/abs/0909.5043v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

20 page, 8 figures

Scientific paper

We employ the Landau-Lifshitz-Bloch (LLB) equation to investigate current-induced domain wall motion at finite temperatures by numerical micromagnetic simulations. We extend the LLB equation with spin torque terms that account for the effect of spin-polarized currents and we find that the velocities depend strongly on the interplay between adiabatic and non-adiabatic spin torque terms. As a function of temperature, we find non-monotonous behavior, which might be useful to determine the relative strengths of the spin torque terms experimentally.

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