Charge disproportionation and site-selective local magnetic moments in the post-perovskite-type Fe${}_2$O${}_3$ under ultra-high pressures

I. Leonov, G. Kh. Rozenberg, I. A. Abrikosov

The archetypal $3d$ Mott insulator hematite, Fe${}_2$O${}_3$, is one of the basic oxide components playing an important role in mineralogy of Earth's lower mantle. Its high pressure-te…