| Issue |
Europhys. Lett.
Volume 41, Number 6, March II 1998
|
|
|---|---|---|
| Page(s) | 635 - 640 | |
| Section | Condensed matter: structure, thermal and mechanical properties | |
| DOI | https://doi.org/10.1209/epl/i1998-00205-7 | |
| Published online | 01 September 2002 | |
On the Lindemann criterion in 2D
Department of Pure and Applied Physics,
The Queen's University of Belfast, Belfast BT7 1NN, Northern Ireland
Received:
28
July
1997
Accepted:
27
January
1998
Molecular-dynamics simulations suggest that in 2D screened
Coulomb solids melt when the r.m.s. displacement of particles in local
co-ordinate systems exceeds 
of the lattice period, close to the
Lindemann criterion in 3D. This criterion is over-estimated in the
co-operative motion model, but under-estimated in the Einstein model, because
during melting a 2D solid is a mixture of both ordered and disordered phases.
PACS: 64.60.Cn – Order-disorder transformations; statistical mechanics of model systems / 64.60.Ht – Dynamic critical phenomena / 64.70.Dv – Solid-liquid transitions
© EDP Sciences, 1998
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