Fig. 4: Schematic diagram of the structural changes in TaS2 under compression and the Tc variation with pressure.
From: Structural phase transition and superconductivity hierarchy in 1T-TaS2 under pressure up to 100 GPa

The P–Tc diagram is divided into different regions based on the structural transitions under high pressure. The black solid triangles represent Tc from previous electrical resistivity measurements20. The red solid circles and green stars represent the Tc measured in run 1 and run 2, respectively.