Fig. 2: Current-driven skyrmion dynamics overview.
From: Visualizing the strongly reshaped skyrmion Hall effect in multilayer wire devices
a Polar plot overview of the skyrmion motion statistics for μ0H ≃ 75 mT across all currents J (data for J < 0 flipped by 180∘), showing the spread of velocity (vS) and angular deflection (θS). The data is visibly biased towards the upper left quadrant. Inset shows a schematic defining vS and θS relative to the direction of J. b Plot of the average skyrmion speed, 〈vS〉, against J for various applied fields. Solid lines present exponential fits (see Methods), while shaded regions represent the standard deviation, also emphasized by error bars for selected points. The dotted line — determined from (d) — demarcates creep and plastic flow regimes. c 2D histogram color plot of skyrmion deflection, θS against vS for μ0H ≃ 75 mT across all currents. The data were binned by vS for this plot. Solid markers show the average deflection, 〈θS〉, for each vS bin. d Plot of 〈θS〉 against 〈vS〉 — determined as in (c) — for various applied fields. Solid lines present sigmoidal fits (see Methods), while shaded regions represent the standard deviation, also emphasized by error bars for selected points. Creep and plastic flow regimes are demarcated at \(\langle {\theta }_{{\rm{S}}}\rangle =0.5\ {\langle {\theta }_{{\rm{S}}}\rangle }^{{\rm{sat}}}\) using the fit.
