Deshpande, M. D. ; Kanhere, D. G. ; Vasiliev, Igor ; Martin, Richard M. (2003) Ab initio absorption spectra of Aln (n=2-13) clusters Physical Review B, 68 (3). 035428_1-035428_5. ISSN 0163-1829
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Official URL: http://prb.aps.org/abstract/PRB/v68/i3/e035428
Related URL: http://dx.doi.org/10.1103/PhysRevB.68.035428
Abstract
We investigate the optical absorption spectra of Aln (n=2-13) clusters using the time-dependent spin-polarized local-density approximation. The overall shapes of the calculated spectra strongly depend on cluster geometries. It is observed that a simple jellium model is not valid for these clusters. In the size range of n<~5, the spectra show discrete, atomiclike transitions. For n=6-12, the shape of the absorption spectra can be explained on the basis of an ellipsoidal shell model. A strong collective excitation peak is observed for Al13 cluster, which is due to its spherical symmetry.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 16170 |
| Deposited On: | 15 Nov 2010 14:05 |
| Last Modified: | 03 Jun 2011 06:17 |
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