Fig. 1. (Color online) (a) Layer structure, (b) RHEED pattern, and (c) XRD curves of Cd₃As₂ films with various Mn doping concentration. (d) The enlarged XRD curves of (c) around the Cd₃As₂ (112) diffraction peak.

Fig. 2. (Color online) (a) Field effect device diagram, (b) Temperature dependence, and (c, d) Magnetic field dependence of Mn-doped Cd₃As₂ films. The inset of (b) shows the fitting line based on Arrhenius equation, in which the blue curve is offset for clarity.

Fig. 3. (Color online) Hall resistance as a function of magnetic field in Mn-doped Cd₃As₂ films at (a) 300 K and (b) 2 K. The unit of (b) is h/e² (or ~2 5812.8 Ω).

Fig. 4. (Color online) Magnetic field dependence of (a) longitudinal and (b) transverse resistances for a 0.5% Mn-doped Cd₃As₂ film at 2 K.