Localized adatom vibrations in Si clusters
- 15 October 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 44 (15) , 8334-8337
- https://doi.org/10.1103/physrevb.44.8334
Abstract
We present results for the vibrational spectra of models for Si clusters. Our calculations are based on the Stillinger-Weber phenomenological potential. We find that in a 33-atom model cluster there exist localized ‘‘adatom’’ vibrations that are similar in character to modes of the 7×7 reconstructed Si(111) crystalline surface. The unique character of the localized adatom modes would serve as a stringent test of the cluster geometry through Raman experiments.Keywords
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