Fig. 2: Electric control of polar domains in GaV₄Se₈.

a Temperature dependence of the polarization along the [111] axis, measured during heating after poling with different electric fields, E_p∥[111], upon cooling. The dashed line indicates the saturation polarization expected for negative poling fields. b, c Schematic representations of the cubic unit cell indicating the four possible directions of the polarization, P₁₋₄, emerging in the rhombohedral phase. For +E_p, the P₁ domain state is favored (b), for −E_p, the P₂₋₄ domain states are favored (c). In the magneto-current and torque experiments, described later, the magnetic field was rotated in the (1\(\overline{1}\)0) plane, highlighted in orange in b. The angle ϕ is spanned by the field and the [111] axis.