Volume 76, Number 6, December 2006
|Page(s)||1130 - 1136|
|Section||Condensed matter: structural, mechanical and thermal properties|
|Published online||24 November 2006|
Self-organized criticality below the glass transition
Department of Physics and Astronomy, Bucknell University Lewisburg, PA 17837, USA
2 Institut für Theoretische Physik, Universität Göttingen Friedrich-Hund-Platz 1, D-37077 Göttingen, Germany
Accepted: 31 October 2006
We obtain evidence that the dynamics of glassy systems below the glass transition is characterized by self-organized criticality. Using molecular-dynamics simulations of a model glass-former we identify clusters of cooperatively jumping particles. We find string-like clusters whose size is power-law-distributed not only close to but for all temperatures below , indicating self-organized criticality which we interpret as a freezing in of critical behavior.
PACS: 64.70.Pf – Glass transitions / 02.70.Ns – Molecular dynamics and particle methods / 61.43.Fs – Glasses
© EDP Sciences, 2006
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