The European Physical Journal D

, Volume 43, Issue 1–3, pp 57–60

Geometric magic numbers of sodium clusters: Interpretation of the melting behaviour

Structure and Thermodynamics of Free Clusters

DOI: 10.1140/epjd/e2007-00092-x

Cite this article as:
Noya, E., Doye, J., Wales, D. et al. Eur. Phys. J. D (2007) 43: 57. doi:10.1140/epjd/e2007-00092-x

Abstract.

Putative global minima of sodium clusters with up to 380 atoms have been located for two model interatomic potentials in order to identify the structures responsible for the size-dependence of the thermodynamic properties in experiments. Structures based upon the Mackay icosahedra predominate for both potentials, and the magic numbers for the Murrell-Mottram model show excellent agreement with the sizes at which maxima in the latent heat and entropy change at melting have been found in experiment. In particular, the magic numbers at sizes intermediate between the complete Mackay icosahedra are due to unusual twisted icosahedral structures.

PACS.

61.46.Bc Clusters 36.40.Mr Spectroscopy and geometrical structure of clusters 

Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007

Authors and Affiliations

  • E. G. Noya
    • 1
  • J. P.K. Doye
    • 2
  • D. J. Wales
    • 1
  • A. Aguado
    • 3
  1. 1.University Chemical LaboratoryCambridgeUK
  2. 2.Physical & Theoretical Chemistry Laboratory, University of OxfordOxfordUK
  3. 3.Departamento de Física TeóricaUniversidad de ValladolidValladolidSpain

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