We investigate the current-induced domain wall motion in perpendicular magnetized Tb/Co
wires with structure inversion asymmetry and different layered structures. We find that the
critical current density to drive domain wall motion strongly depends on the layered
structure. The lowest critical current density∼ 15 MA/cm 2 and the highest slope of domain
wall velocity curve are obtained for the wire having thin Co sublayers and more inner Tb/Co
interfaces, while the largest critical current density∼ 26 MA/cm 2 required to drive domain …

The current-induced domain wall motion (CIDM) in thin perpendicular magnetized
ferromagnetic wires sandwiched between a heavy metal and an oxide has been expected to
be very efficient in getting high DW velocity at low current density for developing spintronic
devices. The addressed high velocity in these asymmetric wires is attributed to the presence
of structural inversion asymmetry (SIA) and/or heavy metals like Pt which can lead to strong
spin-orbit interaction (SOI) and induce additional spin-orbit torques (SOTs). Recently, a …