Glass Transition in Supercooled Liquids with Medium-Range Crystalline Order

Comment on "correlation between dynamic heterogeneity and medium-range order in two-dimensional glass-forming liquids".

Correlation between dynamic heterogeneity and medium-range order in two-dimensional glass-forming liquids.

A glassy state of matter results if crystallization is avoided upon cooling or increasing density. However, the physical factors controlling the ease of vitrification and nature of the glass transition remain elusive. Using numerical simulations of polydisperse hard disks, we find a direct relation between medium-range crystalline ordering and the slow dynamics which characterizes the glass tra...

Critical scaling of icosahedral medium-range order in CuZr metallic glass-forming liquids

The temperature evolution of icosahedral medium-range order formed by interpenetrating icosahedra in CuZr metallic glassforming liquids was investigated via molecular dynamics simulations. Scaling analysis based on percolation theory was employed, and it is found that the size distribution of clusters formed by the central atoms of icosahedra at various temperatures follows a very good scaling ...

A relationship between diffusivity and cooperativity of supercooled liquids in the proximity of glass transition

In structurally disordered glass-forming liquids, the Stokes-Einstein (SE) law for translational diffusivity is violated, in particular, in the proximity of the glass transition temperature. Usually, the violation of the SE law is explained as due to the decoupling of the diffusivity from the viscous flow. Meanwhile, one of the prominent features observed in the supercooled liquids is the drast...

Nonequilibrium static growing length scales in supercooled liquids on approaching the glass transition.

The small wavenumber k behavior of the structure factor S(k) of overcompressed amorphous hard-sphere configurations was previously studied for a wide range of densities up to the maximally random jammed state, which can be viewed as a prototypical glassy state [A. Hopkins, F. H. Stillinger, and S. Torquato, Phys. Rev. E 86, 021505 (2012)]. It was found that a precursor to the glassy jammed stat...