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Shell structure and s—p hybridization in small aluminum clusters

✍ Scribed by G. Ganteför; W. Eberhardt

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
486 KB
Volume
217
Category
Article
ISSN
0009-2614

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✦ Synopsis

Photoelectron spectra of Al; (n = 2-20) clusters are presented. Due to the improved energy resolution and the relatively high photon energy (hv= 6.424 eV, ArF laser radiation) available in our experiment the spectra reveal the mechanism of the onset of the s-p hybridization occuring in these particles. Between Al; -Al, a mixing of the uppermost antibonding 3s derived orbital with the 3p band takes place which is observed simultaneously with the 2D-+3D structural transition predicted for Al clusters in this size range. Starting from Al, a pattern resembling an electronic shell structure is identified.

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