Elijah Flenner and Grzegorz Szamel 2007 J. Phys.: Condens. Matter 19 205125 doi:10.1088/0953-8984/19/20/205125
Anisotropic spatially heterogeneous dynamics in a model glass-forming binary mixture
Elijah Flenner1 and Grzegorz Szamel
Show affiliationsWe calculated a four-point correlation function 
and the corresponding structure factor 
for a model glass-forming binary mixture. These functions measure the spatial correlations of the relaxation of different particles. We found that these four-point functions are anisotropic and depend on the angle between vectors 
and 
(or 
). The anisotropy is the strongest for times somewhat longer than the β relaxation time, but it is quite pronounced even for times comparable to the α relaxation time, τα. At the lowest temperatures 
is strongly anisotropic even for the smallest wavevector q accessible in our simulation.
- PACS
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61.20.Lc Time-dependent properties; relaxation
- Subjects
- Dates
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Issue 20 (23 May 2007)
Received 9 October 2006
Published 25 April 2007
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Anisotropic spatially heterogeneous dynamics in a model glass-forming binary mixture
Elijah Flenner and Grzegorz Szamel 2007 J. Phys.: Condens. Matter 19 205125
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