Fig. 1
From: Carbon network evolution from dimers to sheets in superconducting ytrrium dicarbide under pressure
Phase stabilities with pressure. The calculated enthalpy per atom of YC2 is shown as a function of pressure up to 300 GPa relative to the Immm structure, and (insert) around ambient pressure relative to the Pnma structure. Arrows indicate the phase transition pressures. The pressure-induced phase transition sequence at 0 K is indicated by the coloured bars
