Report on 2209.05353v2

Résumé

FePS 3 is a prototype van der Waals layered antiferromagnet and a Mott insulator under ambient conditions, which has been recently reported to go through a pressure-induced dimensionality crossover and an insulator-to-metal transition.These transitions also lead to the appearance of a novel magnetic metallic state.To further understand these emergent structural and physical properties, we have performed a first-principles study using van der Waals and Hubbard U corrected density functional theory including a random structure search.Our computational study attempts to interpret the experimental coexistence of the low-and intermediate-pressure phases and we predict a novel high-pressure phase with distinctive dimensionality and different possible origins of metallicity.

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