Liquid metals and liquid carbon: some similar properties at high temperatures

Liquid carbon resistivity ρ (just after the melting) diminishes with rising of input energy and pressure P (for P - lower than 50 kbar). Far above melting point, at high pressure (higher ~50 kbar) liquid carbon resistivity rises sharply, up to 3000 µΩ⋅cm. It was shown that the liquid carbon (as some other metals, for example W, Li) has one and the same property: a denser phase (in liquid state) has higher resistivity