Fluctuations near the Onset of Rigidity in a 2D Supercooled Liquid

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概要

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• On cooling, many supercooled liquids undergo a continuous transition to a rigid disordered state, metastable to the crystal. In this paper we characterise the fluctuations in a binary mixture of soft disks in 2D as it undergoes this transition using molecular dynamics simulations. The growth of fluctuations in the local relaxation kinetics leads to dynamic heterogeneities. While establishing that the groundstates exhibit very strong correlations between local 5-fold and 7-fold sites and an inherent stress heterogeneity, we have been unable to demonstrate any significant correlation between local structure and local dynamics. As is the case for many glass-forming liquids, C_P is found to undergo an abrupt increase on heating through a glass transition temperature. We show that this increase is largely due to volume fluctuations.

• 一般社団法人日本物理学会の論文
• 2000-04-28

著者

• Harrowell Peter

  School of Chemistry, University of Sydney

• Fynewver H.

  School of Chemistry, University of Sydney

関連論文

• The shear induced disordering transition in a colloidal crystal (第1回東和大学国際研究会「統計物理学:理論,実験,計算機シミュレ-ション」) -- (Complex Fluids)
• Fluctuations near the Onset of Rigidity in a 2D Supercooled Liquid

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