Fig. 4: Pressure-induced superconductivity in CsV6Sb6.
a Temperature dependence of the resistance of CsV6Sb6 normalized using the room temperature (300 K) value under various pressures up to 79.5 GPa. The curves taken at P < 40 GPa and P > 40 GPa are measured in samples S1 and S2, respectively. Data are shifted vertically for clearance. The gray vertical bar denotes a scale of 0.25. b An expanded view of the low-temperature resistance of CsV6Sb6 in a pressure range of 21.2–79.5 GPa, showing the superconducting transitions. c Phase diagram for CsV6Sb6 under pressure. The superconducting transition temperature Tc (red solid circles) is determined as the temperature where the resistance drops to 90% of the normal state value. The shaded regimes shown in green and blue represents the rhombohedral (space group R\(\bar{3}\)m) and monoclinic (space group P2/m) structural phases, respectively (see Supplementary Figs. 8, 9).
