Apparent finite-size effects in the dynamics of supercooled liquids

Details Apparent finite-size effects in the dynamics of supercooled liquids Apparent finite-size effects in the dynamics of supercooled liquids

1999-03-17

arxiv.org/abs/cond-mat/9903260v3

Phys. Rev. E 61, R41 (2000)

Physics

Condensed Matter

Soft Condensed Matter

4 pages 5 figures

Scientific paper

10.1103/PhysRevE.61.R41

Molecular dynamics simulations are performed for a supercooled simple liquid with changing the system size from N=108 to $10^4$ to examine possible finite-size effects. Although almost no systematic deviation is detected in the static pair correlation functions, it is demonstrated that the structural $\alpha$ relaxation in a small system becomes considerably slower than that in larger systems for temperatures below $T_c$ at which the size of the cooperative particle motions becomes comparable to the unit cell length of the small system. The discrepancy increases with decreasing temperature.

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