Fig. 3
Results of the pump-probe reflection measurements in Nd2CuO4. a Time evolutions of reflectivity changes ΔR/R for xph = 0.0016–0.079 ph/Cu. A yellow line reshows the cross-correlation profile between pump and probe pulses. b–d Time evolutions of ΔR/R for b xph = 0.0049 ph/Cu, c xph = 0.024 ph/Cu, and d xph = 0.079 ph/Cu with fitting curves. Green and purple lines in (c) (green and blue ones in (d)) reflect the mid-gap-absorption components and the Drude components, respectively. Thin gray lines show the sum of two components. e Time evolutions of reflectivity changes ΔR/R reflecting the Drude components for xph = 0.0065–0.079 ph/Cu derived from the fitting analyses. The colors are the same as in (a). f, g xph-dependences of f amplitudes and g decay time of the reflectivity changes ΔR/R reflecting the Drude components. Error bars in (g) show standard deviations of the least-squares fit. The inset shows a schematic illustration of the Auger recombination
