Role of orientation in the structure and dynamics of a supercooled molecular liquid

被引:11
作者
Ma, WJ [1 ]
Lai, SK [1 ]
机构
[1] ROYAL MELBOURNE INST TECHNOL, DEPT APPL PHYS, MELBOURNE, VIC 3001, AUSTRALIA
关键词
D O I
10.1103/PhysRevE.55.2026
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
We performed molecular-dynamics simulation on the pair correlation function, mean-square displacement, and self-part intermediate scattering function for supercooled Liquid nitrogen dimers. Our simulation data showed that for the latter the orientational degree of freedom, if identified as a form of structural impediment, has the consequence of making more robust the structural arrest at decreasing temperature. This conclusion is consistent with the magnitude of the lambda parameter determined in conjunction with the idealized mode-coupling theory for the description of the dynamics of beta relaxation.
引用
收藏
页码:2026 / 2029
页数:4
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