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Supplementary Materials

This PDF file includes:

  • Supplementary Text
  • fig. S1. Schematic illustration of basic parameters used in the Q2D model for current driven domain wall motion.
  • fig. S2. Profile of anisotropy constant Keff(q) with Keff0 = 3.5 × 106 erg/cm3, η = 0.03, qs = 0 nm, and q0 = 10 nm.
  • fig. S3. Modeling of thermal broadening.
  • fig. S4. Schematic of current distribution in curved wire with width w and mid-radius R.
  • fig. S5. Plots of Q2D model calculation results that take neither nonuniform current distribution nor pinning and thermal fluctuation into account.
  • fig. S6. Radial dependence of DW velocities transverse to the curve wire direction.
  • fig. S7. Plots of Q2D model calculation results that take pinning and thermal fluctuation but no nonuniform current distribution into account.
  • fig. S8. Plots of time-resolved Q2D model calculation results that take pinning and thermal fluctuation but no nonuniform current distribution into account.
  • fig. S9. Plots of Q2D model calculation results that take nonuniform current distribution and pinning, but no thermal fluctuation into account.
  • fig. S10. Plots of Q2D model calculation results that take nonuniform current distribution, pinning, and thermal fluctuation into account for various radii while
    width is fixed.
  • fig. S11. Plots of Q2D model calculation results that take nonuniform current distribution, pinning, and thermal fluctuation into account for various widths
    while the radius is fixed.
  • fig. S12. Plots of time-resolved Q2D model calculation results that take pinning and thermal fluctuation but no nonuniform current distribution into account.
  • fig. S13. Comparison of micromagnetic simulations and Q2D model.
  • fig. S14. Unabridged Kerr images corresponding to the main text.
  • fig. S15. Schematic table outlines the relationship between the effect of curvature on the DW velocity (⊙ | ⊗ or ⊗ | ⊙), which is found to be independent of the sign of DMI or SHE.
  • fig. S16. v against J of the quasi-2D model calculation results that take nonuniform current distribution, pinning, and thermal fluctuation into account for R = 100, 150, and 175 nm while w is fixed at 50 nm.
  • Legend for movie S1
  • References (33–36)

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Other Supplementary Material for this manuscript includes the following:

  • movie S1 (.avi format). Animation of Q2D calculation of time resolved DW motion in curved nanowires with positive curvatures for various radii and widths.

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