Anomalous transport in glassforming liquids

W. KOB, G. APPIGNANESI, J. RODRÍGUEZ FRIS AND R. MONTANI

Anomalous Transport: Foundations and Applications

Wiley-VCH

Lugar: Weinheim, Alemania; Año: 2008; p. 347 - 366

Experimentally it is found that the relaxation dynamics (or the viscosity) of supercooled liquids slows down (increases) by 13-15 decades if the temperature is lowered by a factor of only 2-3. The microscopic reason for this dramatic slowing down of the dynamics is so far not really understood.We will present the results of molecular dynamics computer simulations in which we have investigated the processes that are relevant for the slow transport of the particles in these systems and show that these processes are highly cooperative. Ref.: G. A. Appignanesi, J. A. Rodriguez Fris, R. A. Montani, and W. Kob Phys. Rev. Lett.96, 057801 (2006).