Fig. 1. (Color online) (a) T dependence of the zero-field ρ_xx varying from 5 to 300 K. The fitting curves using activation model in different T regions are plotted in red, blue and green lines, respectively. The inset gives a linear relation between ln(Δσ_xx) and 1/T in the corresponding T ranges. (b) The MR at several selected temperatures. The inset shows the temperature dependence of MR at specific applied field.

Fig. 2. (Color online) T dependence of M varying from 5 to 280 K. (a) The fitting curves using T², T^3/2 and exponential dependences in different T regions are plotted in red, blue and green lines, respectively. The formulas describing M(T) in corresponding T regions are shown. (b) The linear relations of ln(1–M(T)²/M(0)²) (red line) and ln(1–M(T)/M(0)) (blue line) versus T.

Fig. 3. (Color online) (a) ρ_xy(H) varying with H and T after the subtraction of the background signals originated from ρ_xx. The inset shows the hysteresis loop at 5 K perpendicular and parallel to the film plane. (b) The relation between ρ_AH and ρ_xx². The slope value is estimated to be about 55 Ω^–1cm^–1.