Abstract
The current-driven domain wall propagation along a thin ferromagnetic strip with high perpendicular magnetocrystalline anisotropy is studied by means of micromagnetic simulations with emphasis on the role of the Rashba field, which has been predicted to play a dominant role in multilayer stacks with structure inversion asymmetry. Taking into account the surface roughness and thermal fluctuations, the results show a current dependence of the domain wall velocity in good qualitative agreement with recent experimental observations. It depicts (i) a low-current creep regime, where the domain wall velocity increases exponentially and (ii) a high-current linear regime where the wall propagates rigidly with a higher mobility than the one expected in the turbulent Walker regime. The analysis seems to be essential in order to get a better understanding of the magnitude of the non-adiabatic torque by direct comparison with experimental measurements.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
