| Issue |
Europhys. Lett.
Volume 34, Number 5, May II 1996
|
|
|---|---|---|
| Page(s) | 361 - 366 | |
| Section | Condensed matter: structure, thermal and mechanical properties | |
| DOI | https://doi.org/10.1209/epl/i1996-00465-1 | |
| Published online | 01 September 2002 | |
Cooperative jumps and hop-back motion in supercooled liquids near the glass transition in binary colloids
Department of
Physics, Indian Institute of Science - Bangalore 560 012, India
Received:
14
November
1995
Accepted:
21
March
1996
Brownian Dynamics simulations on binary charged colloids have been
performed to get a liquid to crystal (at volume fraction 
)
or glass (
) as the temperature is lowered. The subdiffusive
and staircase behaviours of the mean-squared displacements as well as
the behaviour of van-Hove self-correlation functions for the supercooled
liquid with indicate strongly cooperative particle
motion. The van-Hove distinct correlations follow a factorization
property predicted by the mode-coupling theory. Most interestingly,
a few particles show an interconnected cooperative hop and subseqent
hop-back motion very close to the glass transition.
PACS: 64.70.Pf – Glass transitions / 61.20.Ja – Computer simulation / 64.70.Dv – Solid-liquid transitions
© EDP Sciences, 1996
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