Fig. 3: Periodic deformation of an elongated skyrmion during the oscillation.
From: Elongated skyrmion as spin torque nano-oscillator and magnonic waveguide
Snapshots of a the magnetization and b the corresponding spatial distributions of the topological charge density at different simulation time in a period. The color bar in (a) represents the y component of the magnetization my, while it describes the topological charge density ρ in (b). Variations of (c) the total energy E and (d) the net topological number Q during the oscillation.
