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Supplementary Materials

This PDF file includes:

  • Section S1. Temperature and magnetic field dependence of the magnetization and susceptibility
  • Section S2. Frequency dependence of the ac susceptibility
  • Section S3. Phase boundaries determined from SANS
  • Section S4. Effect of magnetic anisotropy on the direction of the spiral wave vector
  • Section S5. Numerical studies of spiral reorientation processes in the presence of competing anisotropies
  • Section S6. Electric polarization
  • Fig. S1. Magnetic properties of Cu2OSeO3.
  • Fig. S2. Temperature dependence of the magnetization.
  • Fig. S3. χ′ and χ′′ as a function of magnetic field.
  • Fig. S4. Frequency dependence of χ′ and χ′′ at T = 5 K.
  • Fig. S5. Magnetic field dependence of the SANS intensity at 6 K.
  • Fig. S6. Effective anisotropy.
  • Fig. S7. Spiral reorientation for H ∥ 001.
  • Fig. S8. Spiral reorientation for H ∥ 110.
  • Fig. S9. Field-induced reorientation of the spiral wave vectors for H ∥ 001 and for the fourth-order anisotropy κ = −0.2 and the anisotropic exchange γ1 < 0.
  • Reference (40)

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