6533b822fe1ef96bd127cda5
RESEARCH PRODUCT
Inherent structure entropy of supercooled liquids
Francesco SciortinoWalter KobPiero Tartagliasubject
PhysicsStatistical Mechanics (cond-mat.stat-mech)FOS: Physical sciencesGeneral Physics and AstronomyThermodynamicsBinary numberDisordered Systems and Neural Networks (cond-mat.dis-nn)Condensed Matter - Disordered Systems and Neural NetworksCondensed Matter::Disordered Systems and Neural NetworksPotential energyCondensed Matter::Soft Condensed MatterPotential energy landscapeConfiguration spaceSupercoolingCondensed Matter - Statistical Mechanicsdescription
We present a quantitative description of the thermodynamics in a supercooled binary Lennard Jones liquid via the evaluation of the degeneracy of the inherent structures, i.e. of the number of potential energy basins in configuration space. We find that for supercooled states, the contribution of the inherent structures to the free energy of the liquid almost completely decouples from the vibrational contribution. An important byproduct of the presented analysis is the determination of the Kauzmann temperature for the studied system. The resulting quantitative picture of the thermodynamics of the inherent structures offers new suggestions for the description of equilibrium and out-of-equilibrium slow-dynamics in liquids below the Mode-Coupling temperature.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-06-06 |