Fig. 2: Charge order melting in La2−xBaxCuO4.
From: Probing light-driven quantum materials with ultrafast resonant inelastic X-ray scattering
a Reciprocal space map of structural Bragg peaks, charge order (CO) and spin order (SO) peaks in La2−xBaxCuO4. The blue area represents the maximum momentum transfer achievable at the Cu L-edge (931 eV). The location of peaks in momentum space is denoted by the Miller indices (H, K, L) and expressed in reciprocal lattice units (r.l.u.) b Time-resolved resonant inelastic X-ray scattering (trRIXS) spectra of photoexcited La1.875Ba0.125CuO4 at QCO = (0.236, 0, 1.5) r.l.u. at the Cu L-edge for variable pump-probe time delay. c trRIXS spectra for a selection of time delays showing a prompt melting of the CO, whereas higher energy features of the inelastic spectrum, e.g., dd excitations/Cu2+ emission and charge transfer (CT) excitations, remain unaffected. Error bars represent Poisson counting uncertainties. Adapted with permission from ref. 50.
