Johari-Goldstein β relaxation in glassy dynamics originates from two-scale energy landscape.

ABSTRACT: Supercooled liquids undergo complicated structural relaxation processes, which have been a long-standing problem in both experimental and theoretical aspects of condensed matter physics. In particular, past experiments widely observed for many types of molecular liquids that relaxation dynamics separated into two distinct processes at low temperatures. One of the possible interpretations is that this separation originates from the two-scale hierarchical topography of the potential energy landscape; however, it has never been verified. Molecular dynamics simulations are a promising approach to tackle this issue, but we must overcome laborious difficulties. First, we must handle a model of molecular liquids that is computationally demanding compared to simple spherical models, which have bee

SUBMITTER: Shiraishi K 

PROVIDER: S-EPMC10083593 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature