Europhys. Lett.
Volume 61, Number 6, March 2003
Page(s) 790 - 795
Section Condensed matter: structure, mechanical and thermal properties
Published online 01 March 2003
DOI: 10.1209/epl/i2003-00303-0
Europhys. Lett., 61 (6) , pp. 790-795 (2003)

Effects of pinned particles on the structural relaxation of supercooled liquids

K. Kim

Department of Applied Mathematics and Physics, Graduate School of Informatics Kyoto University - Kyoto 606-8501, Japan

(Received 6 September 2002; accepted in final form 2 January 2003)

Pinned particles in space are introduced in our molecular-dynamics simulations. Effects of pinned particles on the structural relaxation in binary soft-sphere supercooled liquids are examined. It is found that the relaxation dynamics becomes slower as the number of the pinned particles increase and this tendency is enhanced as the degree of supercooling becomes high. In addition, we obtained the temperature dependence of the size $\xi$ of the cooperatively rearranging region as power law $\xi
\propto T^{-\mu}$ from our simulations.

64.70.Pf - Glass transitions.
61.20.Lc - Time-dependent properties; relaxation.
61.20.Ja - Computer simulation of liquid structure.

© EDP Sciences 2003