Apparent finite-size effects in the dynamics of supercooled liquids

by: Kang Kim, Ryoichi Yamamoto

Physical Review E, Vol. 61, No. 1. (January 2000), pp. R41-R44.

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摘要

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 α 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.

@article{yamamoto00, abstract = {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 α 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.}, author = {Kim, Kang and Yamamoto, Ryoichi }, citeulike-article-id = {1244073}, doi = {http://dx.doi.org/10.1103/PhysRevE.61.R41}, journal = {Physical Review E}, keywords = {confinement, glass, length-scale, simulation, soft-sphere}, month = {January}, number = {1}, pages = {R41--R44}, posted-at = {2007-09-24 15:16:36}, priority = {0}, publisher = {American Physical Society}, title = {Apparent finite-size effects in the dynamics of supercooled liquids}, url = {http://dx.doi.org/10.1103/PhysRevE.61.R41}, volume = {61}, year = {2000} }

RIS record

TY - JOUR ID - yamamoto00 L3 - citeulike-article-id:1244073 N2 - 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 α 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. IS - 1 JF - Physical Review E EP - R44 TI - Apparent finite-size effects in the dynamics of supercooled liquids PB - American Physical Society VL - 61 SP - R41 KW - confinement KW - glass KW - length-scale KW - simulation KW - soft-sphere AU - Kim, Kang AU - Yamamoto, Ryoichi PY - 2000/01// UR - http://dx.doi.org/10.1103/PhysRevE.61.R41 ER -

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