A new view of the Lindemann criterion
Disordered Systems and Neural Networks
2016-03-21 v1 Soft Condensed Matter
Abstract
The Lindemann criterion is reformulated in terms of the average shear modulus of the melting crystal, indicating a critical melting shear strain which is necessary to form the many different inherent states of the liquid. In glass formers with covalent bonds, one has to distinguish between soft and hard degrees of freedom to reach agreement. The temperature dependence of the picosecond mean square displacements of liquid and crystal shows that there are two separate contributions to the divergence of the viscosity with decreasing temperature: the anharmonic increase of the shear modulus and a diverging correlation length .
Keywords
Cite
@article{arxiv.1311.4739,
title = {A new view of the Lindemann criterion},
author = {U. Buchenau and R. Zorn and M. A. Ramos},
journal= {arXiv preprint arXiv:1311.4739},
year = {2016}
}
Comments
4 pages, 3 figures