Abstract

The geometry of a magnetic body is fundamental when considering applications based on domain wall (DW) propagation in nanometric systems. In this framework, helical systems allow the exploration of new and interesting phenomena. Through micromagnetic simulations and analytical calculations, we study the propagation of N & eacute;el DWs under the action of a spin-polarized current hosted in a helix-shaped nanowire (NW) with constant curvature and torsion and an uniaxial anisotropy pointing locally perpendicularly to the NW. Our results show that for a N & eacute;el DW propagating in a twisted NW, the effect of torsion (curvature) is equivalent to curvature (torsion) effects on the propagation of a transverse DW in an equivalent system.