Fig. 1: Theoretical phase diagram of B1-FeO, as a function of reduced volume Δv and temperature T. | Nature Communications

Fig. 1: Theoretical phase diagram of B1-FeO, as a function of reduced volume Δv and temperature T.

From: Quantum critical phase of FeO spans conditions of Earth’s lower mantle

Fig. 1

Δv = (vo − v)/vo, where vo is the volume of FeO at ambient conditions. The color-coded value of the electronic density of states (DOS) at the Fermi energy is used to distinguish the (gapped) Mott insulator from the metal and the intermediate “quantum critical" regime34,49. The “Brinkman-Rice" crossover line82 marks the thermal destruction of coherent quasiparticles in the metal with increasing temperature83.

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