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Vibrational Properties of Si Microclusters and Comparison to the Amorphous Material

Published online by Cambridge University Press:  28 February 2011

Joseph L. Feldman  and
Efthimios Kaxiras
Joseph L. Feldman
Affiliation:
Naval Research Laboratory, Complex Systems Theory Branch, Washington, D.C. 20375–5000
Efthimios Kaxiras
Affiliation:
Sachs/Freeman Assoc., Inc., Landover, MD 20785
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Abstract

The lattice vibrational properties of two clusters of Si atoms are studied using the Stillinger-Weber phenomenological interatomic potential to calculate the dynamical matrix. The clusters contain 33 and 45 atoms, and their structure was postulated from considerations of surface reconstructions in analogy to crystalline Si surfaces. A remarkable similarity to the vibrational density of states of amorphous Si is demonstrated especially for the 45 atom cluster.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 206: Symposium G – Clusters and Cluster-Assembled Materials , 1990 , 79
Copyright
Copyright © Materials Research Society 1991

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References

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