Figure 6. Vertical-current-driven motion of a skyrmionic bit chain at the end of the 40-nm-wide racetrack without any notch at (a) t = 0 ns, (b) t = 10 ns, and at the end of the racetrack with a notch at (c) t = 0 ns, (d) t = 0.95 ns, (e) t = 0.975 ns, (f) t = 1 ns (g) t = 1.025 ns (h) t = 1.05 ns (i) t = 1.075 ns (j) t = 1.1 ns (k) t = 1.125 ns and (l) t = 1.15 ns.

The simulation parameters are the same as in Fig. 5.