Fig. 3: Probing phase transition of CGT using temperature-dependent transport of D1.

a R_xx vs. V_bg with 0 T at 80 K (black) and 2 K (red). b R_xx vs. V_bg with 2 K and 14 T, depending on sweeping direction. N indicates the Landau level index and ΔV_peak is the difference in the peak position for each N. c, d Temperature-dependent R_xx and R_xy vs. μ₀H with V_bg = 0 V. e Temperature dependence of the extracted transport parameter ΔV_DP, which is obtained from the difference of V_DP for forward- (black squares) and backward- (red circles) gate sweeping in the inset. The black-dotted line is to guide the eye. μ₀H_peak corresponds to the local maxima depicted by the dots in (c). Hall carrier density n_Hall is extracted by linear fitting from −1 T to 1 T of R_xy vs. μ₀H in (d). Mobility μ is calculated using the Drude model, where R_xx in Fig. 1d and n_Hall in Fig. 3e are adopted.