Amorphous ground states and collective dynamics in a 2D glass-forming mixture

by: Herb Fynewever, Donna Perera, Peter Harrowell

Journal of Physics: Condensed Matter, Vol. 12, No. 8A. (2000), pp. A399-A402.

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Abstract

On cooling, many supercooled liquids arrive at a rigid disordered state, metastable to the crystal. In this paper, we characterize such amorphous ground states in a binary mixture of soft discs in 2D using molecular dynamics simulations. We find these ground states exhibit very strong correlations between local fivefold and sevenfold sites and an inherent stress heterogeneity. The heat capacity Cp 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.

@article{citeulike:2517692, abstract = {On cooling, many supercooled liquids arrive at a rigid disordered state, metastable to the crystal. In this paper, we characterize such amorphous ground states in a binary mixture of soft discs in 2D using molecular dynamics simulations. We find these ground states exhibit very strong correlations between local fivefold and sevenfold sites and an inherent stress heterogeneity. The heat capacity Cp 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.}, author = {Fynewever, Herb and Perera, Donna and Harrowell, Peter }, citeulike-article-id = {2517692}, doi = {10.1088/0953-8984/12/8A/354}, journal = {Journal of Physics: Condensed Matter}, number = {8A}, pages = {A399--A402}, posted-at = {2008-03-12 04:15:39}, priority = {2}, title = {Amorphous ground states and collective dynamics in a 2D glass-forming mixture}, url = {http://dx.doi.org/10.1088/0953-8984/12/8A/354}, volume = {12}, year = {2000} }

RIS record

TY - JOUR ID - citeulike:2517692 L3 - citeulike-article-id:2517692 TI - Amorphous ground states and collective dynamics in a 2D glass-forming mixture JF - Journal of Physics: Condensed Matter VL - 12 IS - 8A SP - A399 EP - A402 N2 - On cooling, many supercooled liquids arrive at a rigid disordered state, metastable to the crystal. In this paper, we characterize such amorphous ground states in a binary mixture of soft discs in 2D using molecular dynamics simulations. We find these ground states exhibit very strong correlations between local fivefold and sevenfold sites and an inherent stress heterogeneity. The heat capacity Cp 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. AU - Fynewever, Herb AU - Perera, Donna AU - Harrowell, Peter PY - 2000/// UR - http://dx.doi.org/10.1088/0953-8984/12/8A/354 ER -

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