Fig. 3: Result of the time-resolved UED.

Time-evolution of the intensities of \({30\bar{3}0}_{{{{\rm{h}}}}}\), \({4\bar{131}}_{{{{\rm{h}}}}}\), \({5\bar{232}}_{{{{\rm{h}}}}}\), and \({2\bar{2}0\bar{2}}_{{{{\rm{h}}}}}\)-types diffraction spots (left panel) after the 3.1 eV pulse irradiation with 1.8 mJ cm⁻² fluence at room temperature (T = 300 K), indicated by the red, blue, orange, and green circles, respectively, on the diffraction patterns (right panels). The shades at each plots indicate the statistical error. The solid lines in time evolution represents a fitting used to estimate the frequency and decay times of the oscillatory structure (See Supplementary Information C in detail). Dashed lines in the patterns indicate the 1st Brillouin zone. The lattice-type absences of the diffraction peaks for symmetry of R3c are marked by crosses on the simulation, where multiple scatterings are possibly observed (Details are given in Fig. S9).