Extended Data Fig. 5: Temperature dependence of dynamic heterogeneities.
From: Microscopic structural origin of slow dynamics in glass-forming liquids
a-c, The temperature dependences of χ4 (t) of liquid I, liquid II, and PHD, respectively. In all systems, χ4 (t) exhibits a rapid increase with decreasing temperature. This behaviour is noticeable even for liquid II, which is a strong liquid. It is uncommon to observe such pronounced dynamic heterogeneity in strong liquids. Notably, the peak magnitudes of χ4 (t) of liquid II are smaller than those for liquid I and PHD. This trend aligns with the steep decrease in the stretching exponent, β, for liquid II upon cooling (see Fig. 1f in the main text). The underlying reason for this seemingly counterintuitive result is explained in the main text. d-f, The temperature changes of the q-dependence of S4(τ4) for liquid I, liquid II, and PHD, respectively. The solid curves represent fits of the Ornstein-Zernike correlation function to the data, allowing us to determine ξdyn.
