Magnetic order, disorder, and excitations under pressure in the Mott insulator Sr${}_2$IrO${}_4$

Xiang Li, S. E. Cooper, A. Krishnadas +7

Protected by the interplay of on-site Coulomb interactions and spin-orbit coupling, Sr${}_2$IrO${}_4$ at high pressure is a rare example of a Mott insulator with a paramagnetic ground…