In this review a systematic analysis of the potential energy landscape (PEL) of glass-forming
systems is presented. Starting from the thermodynamics, the route towards the dynamics is …

Numerical studies of amorphous Si show that the lowest 4% of vibrational modes are piane
wave like ('propagons') and the highest 3% of modes are localized ('locons'). The rest are …

ZIF-4, a metal-organic framework (MOF) with a zeolitic structure, undergoes a crystal–
amorphous transition on heating to 300° C. The amorphous form, which we term a-ZIF, is …

Amorphous-amorphous transitions in silica glass under a variety of thermomechanical
conditions are studied with molecular-dynamics simulations using a charge-transfer three …

This paper describes the progress that has been made in the past decade in the
investigation of the peculiar dynamic properties of vitreous silica (v-SiO 2) and related …

The theoretical construction of the “Rigid Unit Mode” model arose from asking a few simple
questions about displacive phase transitions in silicates (Dove 1997a, b). The simplest of …

We propose a simple new way to evaluate the effect of anharmonicity on a system's
thermodynamic functions, such as heat capacity. In this approach, the contribution of all the …

Relative Raman scattering intensities are obtained in three samples of vitreous silica of
increasing density. The variation of the intensity upon densification is very different for …

We model the process of densification of silica glass using molecular dynamics simulation in
order to resolve the current controversy regarding the existence of the first-order phase …

We report in situ studies of S i O 2 glass under pressure and find that temperature-induced
densification takes place in a pressure window. To explain this effect, we study how rigidity …