Figure 5
From: Superconductivity in In-doped AgSnBiTe3 with possible band inversion
Estimation of upper critical field Bc2 for y = 0.4. (a) Temperature dependences of resistivity under magnetic fields up to 1.5 T. With increasing field, the Tc systematically decreases. (b) Temperature dependence of Bc2. For the plot of Bc2, middle-point temperatures, where resistivity became 50% of normal-state resistivity at 3 K, were estimated in (a). The dotted line shows WHH fitting.
