fig6

Figure 6. (A) The temperature dependence of the electrical resistance under various external magnetic fields with the pressure held constant at 22.3 GPa. (B) The temperature dependence of the reduced upper critical field μ₀H(T) (red circles) and the fitting curve according to the WHH formula (green line). The inset shows the dependence of T_c on the external magnetic field. The solid and hollow circles stand for Tc^onset and Tc^zero, respectively.