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Density functional theory study of Al23, Al26 and Al92 clusters

A Goldberg1, M D Halls, P Kung and J-J Liang

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In this paper we present results of the structural, energetic and electronic properties of Aln (n = 23, 26, 92) clusters calculated using density functional theory (DFT). Our main focus is the highly symmetric and energetically stable hollow Al92 cluster. This cluster appears as a natural extension of the smaller clusters, Al23 and Al26, that manifest similar structural motifs of pentagonal and hexagonal pyramids. The Al92 cluster maintains Ih symmetry and its central framework is similar to the structure of the well-known C60 fullerene and the recently reported B80 cluster. It has an additional Al atom below each hexagon centre and another one above each pentagon plane. To the best of our knowledge Al92 is the largest Al hollow cluster studied so far.


PACS

36.40.Mr Spectroscopy and geometrical structure of clusters

36.40.Qv Stability and fragmentation of clusters

36.40.Cg Electronic and magnetic properties of clusters

31.15.E- Density-functional theory

Subjects

Atomic and molecular physics

Computational physics

Dates

Issue 12 (28 June 2009)

Received 27 December 2008, in final form 14 April 2009

Published 1 June 2009



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