Figure 6: Variation of fit parameters versus temperature.
From: Evidence for massive bulk Dirac fermions in Pb1−xSnxSe from Nernst and thermopower experiments

The T dependence of the parameters μ (a), (b) and H (c) obtained from best fits to the curves of Sxx (solid triangles) and Sxy (open circles). The fits are most reliable below 100 K where the values obtained from fitting Sxx and Sxy are in agreement. Above 100 K, disagreement between the two sets is significant, especially close to Tinv=180 K. Above 200 K, the one-band model is no longer valid.