Persistent paramagnons deep in the metallic phase of Sr${}_{2-x}$La${}_x$IrO${}_4$

H. Gretarsson, N. H. Sung, J. Porras +13

We have studied the magnetic excitations of electron-doped Sr${}_{2-x}$La${}_x$IrO${}_4$ ($0\le x\le 0.10$) using resonant inelastic x-ray scattering (RIXS) at the Ir L${}_3$-edge. The…