Fig. 1: Magnetic field-induced anisotropy in Cd₃As₂ and electric potential simulations at different magnetic fields in a 3D square sample.

a Sketch of electron trajectory entering the sample through a point-like contact. b Magneto-conductivity σ(B) of Cd₃As₂ when the magnetic field is perpendicular σ_⊥ and parallel σ_∥ to the current direction, and c their resulting anisotropy A = σ_∥∕σ_⊥. d–f Calculated electric potential distribution of a 3D square sample with two current injection points at three different magnetic fields applied along the z-direction. The color scale is different in the three panels for clarity.