Structural relaxation and cage–jump properties.
The diffusivity (panel a) and the relaxation time at a generic length scale λ (panel c) versus their predictions in the CTRW approach. Small deviations are observed at the lowest temperatures due to the emergence of a subdiffusive transient in the dependence of the mean square displacement on the number of jumps, as in panel b at T = 0.45. This indicates that successive jumps of a same particle becomes spatially correlated. All data refer to species a of the KALJ mixture. Analogous results for species b are shown in Fig. S3.