Crossover in dynamics in the Kob-Andersen binary mixture glass-forming liquid

Glass-forming liquids are broadly classified as being fragile or strong, depending on the deviation from Arrhenius behavior of their relaxation times. A to strong crossover is observed inferred in like water and silica, more recently also metallic glasses phase change alloys, leading expectation that such a widely realised among glass formers. We investigate computationally well-studied Kob-Andersen model, accessing temperatures well below mode coupling temperature TMCT. find times exhibit dynamics around TMCT, discuss whether it bears characteristics crossover. Several aspects dynamical heterogeneity mirroring crossover, whereas thermodynamic quantities do not. In particular, Adam-Gibbs relation describing between configurational entropy continues hold when anharmonic corrections vibrational included.