Fractional Stokes–Einstein relation in TIP5P water at high temperatures*

Project supported by the National Natural Science Foundation of China (Grant No. 2153200) and the China Postdoctoral Science Foundation (Grant No. 2016M602712).

Ren Gan, Sang Ge
       

(color online) Testing whether (a) diffusion constant D and (b) structural relaxation τ follow an Arrhenius law as D = D0 exp (-E0/kBT) and τ = τ0 exp (E0/kBT) respectively, with E0 being the activation energy in unit of kBT. The fitted exponent E is in the same color as the fitted solid line.