Optical study of the charge dynamics evolution in the topological insulators MnBi${}_2$Te${}_4$ and Mn(Bi${}_{0.74}$Sb${}_{0.26}$)${}_2$Te${}_4$ under high pressure

M. Köpf, S. H. Lee, Z. Q. Mao +1

The van der Waals material MnBi${}_2$Te${}_4$ and the related Sb-substituted compounds Mn(Bi${}_{1-x}$Sb${}_x$)${}_2$Te${}_4$ are prominent members of the family of magnetic topological insula…