Fig. 4: Temperature dependence measurements.
From: Ballistic transport spectroscopy of spin-orbit-coupled bands in monolayer graphene on WSe2
a Temperature dependence of the local four-terminal conductance \({G}_{{xx}}=1/{R}_{{xx}}\) as a function of charge density, exhibiting a weak temperature dependence of the minimum conductance \({G}_{\min }\) at zero density as magnified in the inset. b Non-local Hall resistance \({R}_{{ae},{cg}}={V}_{{cg}}/{I}_{{ae}}\) as a function of carrier density \(n\) (solid blue line) compared with the calculated Ohmic contribution (broken red line), consistent with the spin Hall effect. c Temperature dependence of the TMF spectra at \(n=-2.6\times {10}^{12}\) cm-2. The smooth backgrounds are extracted by a Gaussian filter with a full width at half maximum of 0.2 T, which is larger than the oscillation period of TMF signals. d The relative scattering lengths (calculated from areas below the first focusing peaks) at \(n=-2.6\times {10}^{12}\) cm-2 (square), \(n=-1.3\times {10}^{12}\) cm−2 (triangle), and \(n=2.6\times {10}^{12}\) cm-2 (circle) as a function of temperature plotted in a log scale, which follows the \({T}^{-1.8}\) dependence, indicated by the dashed red line. See the main text for more discussions.
