Figure 5
From: Skyrmion-skyrmion and skyrmion-edge repulsions in skyrmion-based racetrack memory
Vertical-current-driven motion of a skyrmionic bit chain with initial spacing of 30 nm on the 40-nm-wide racetrack at (a) t = 0.4 ns, (b) t = 0.7 ns and motion of a chain with initial spacing of 60 nm at (c) t = 0.4 ns, (d) t = 0.7 ns.
The current density j = 5 × 1010 A/m2, polarization P = 0.4 and DMI constant D = 3 × 10−3 J/m2. The direction of the electron polarization mp is shown in the upper right corner.
