Volume 71, Number 2, July 2005
|Page(s)||256 - 261|
|Section||Condensed matter: structural, mechanical and thermal properties|
|Published online||10 June 2005|
Temperature-dependent vibrational heterogeneities in harmonic glasses
Dipartimento di Fisica, Università di Trento - 38050 Povo (Trento) Italy
2 INFM CRS-SOFT, c/o Università di Roma “La Sapienza” - 00185, Roma, Italy
3 LPCML, UMR-CNRS 5620, Université Lyon I - 69622 Villeurbanne Cedex, France
4 Dipartimento di Fisica, Università di Roma “La Sapienza” - 00185 Roma, Italy
5 Department of Applied Mathematics and Statistics, Stony Brook University Stony Brook, NY 11794-3600, USA
Accepted: 16 May 2005
Numerical simulation is employed to study dynamical heterogeneities in model monoatomic harmonic glasses, whose atoms interact trough the Lennard-Jones potential. Soft and hard vibrational heterogeneities are observed, and a temperature effect on these heterogeneities is found. A method is proposed to evaluate the size of the heterogeneities.
PACS: 63.50.+x – Vibrational states in disordered systems / 61.43.-j – Disordered solids / 61.43.Fs – Glasses
© EDP Sciences, 2005
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