Point-to-set lengths, local structure, and glassiness Auteur(s): Yaida Sho, Berthier L., Charbonneau Patrick, Tarjus Gilles (Article) Publié: Physical Review E: Statistical, Nonlinear, And Soft Matter Physics, vol. 94 p.032605 (2016) Texte intégral en Openaccess : Ref HAL: hal-01371450_v1 Ref Arxiv: 1511.03573 DOI: 10.1103/PhysRevE.94.032605 WoS: 000383878500004 Ref. & Cit.: NASA ADS Exporter : BibTex | endNote 16 Citations Résumé: The growing sluggishness of glass-forming liquids is thought to be accompanied by growing structural order. The nature of such order, however, remains hotly debated. A decade ago, point-to-set (PTS) correlation lengths were proposed as measures of amorphous order in glass formers, but recent results raise doubts as to their generality. Here, we extend the definition of PTS correlations to agnostically capture any type of growing order in liquids, be it local or amorphous. This advance enables the formulation of a clear distinction between slowing down due to conventional critical ordering and that due to glassiness, and provides a unified framework to assess the relative importance of specific local order and generic amorphous order in glass formation. Commentaires: 12 pages, 8 figures; v2: Fig.4 added, presentation improved. Data relevant to this work can be accessed at http://doi.org/10.7924/G8BG2KWP. Réf Journal: Phys. Rev. E 94, 032605 (2016) |