Fig. 3: Driven magnetic excitations in Sr2IrO4.
From: Probing light-driven quantum materials with ultrafast resonant inelastic X-ray scattering
a Dispersion of the in-plane pseudospin excitation spectrum in Sr2IrO4 as function of momentum transfer q. Black circles correspond to momentum transfer points shown in the other two panels. b, c Ir L-edge (11.215 keV) time-resolved resonant inelastic X-ray scattering (trRIXS) snapshots of the pseudospin excitations excited with a 620 meV pump pulse at negative time delay t (gray) and after 2 picoseconds (red) at momentum transfer Q1 = (0.5, 0) and Q2 = (0.5, 0.5) reciprocal lattice units (r.l.u.). The intensity is measured in counts (cts), while error bars represent Poisson counting uncertainties. The light-induced spectral weight change is highlighted by a red shading. Adapted with author’s permission from ref. 61.
