Article
Extended Data Fig. 7 | Additional data on superconducting transition
and pressure measurements. a, Representative spectra of the diamond
Raman edge used for pressure determination. b, Plot of resistance versus
temperature, showing that the width of the superconducting drop is less than
1 K. Inset, zoom-in of the resistance near 0 Ω. c, Temperature dependence of the
resistance of C–S–H at different pressures (different samples). d, Temperature
dependence of the measured a.c. susceptibility of C–S–H at 182 GPa. The inset
shows raw data at 138 GPa.