Figure 3: Linear MR in B perpendicular to E.

(a) The MR measured at different T indicated. (b) The T dependence of the carrier mobility, which is calculated using Kohler’s rule or equation (1). Inset: the MR at small magnetic fields and the parabola fittings (solid lines) at different T indicated. (c) The carrier density as a function of T. The solid red curve is the fitting using Arrhenius’s law. (d) The slope k of the linear MR at high B (from 8 to 14 T, obtained in a, see solid curves) as a function of carrier density, n. The solid red and blue curves are the fittings using n⁻¹ and n⁻², respectively. The corresponding temperature for each data point is also indicated.