Fig. 1. I-V characteristic curves of samples A and B at 12 K

Fig. 2. Mobility and carrier surface density vs. temperature of samples A and B at zero field

Fig. 3. Curves of the magnetoresistance and the rate of change of magnetoresistance of samples A and B as a function of temperature

Fig. 4. Magnetoresistance change rate of sample A and B and the results after fitting the Kawabata model at various temperatures（magnetic field −0.3 T < B <0.3 T）

Fig. 5. Phase coherence length and anisotropy coefficient of samples A and B as a function of temperature