The development of the 3p and 4p valence band of small aluminum and gallium clusters | Zendy

ChiaYen Cha | Zendy; Gerd Ganteför | Zendy; W. Eberhardt | Zendy

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The development of the 3p and 4p valence band of small aluminum and gallium clusters

Author(s) -

ChiaYen Cha,

Gerd Ganteför,

W. Eberhardt

Publication year - 1994

Publication title -

the journal of chemical physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.071

H-Index - 357

eISSN - 1089-7690

pISSN - 0021-9606

DOI - 10.1063/1.466582

Subject(s) - jellium , gallium , chemistry , spectral line , atomic physics , icosahedral symmetry , x ray photoelectron spectroscopy , atomic orbital , molecular orbital , valence electron , binding energy , molecular physics , electron , crystallography , physics , molecule , nuclear magnetic resonance , organic chemistry , quantum mechanics , astronomy , metal

Photoelectron spectra of Al−n and Ga−n clusters in the size range n=1–15 are presented. Using 5.0 and 3.68 eV UV light (KrF excimer and nitrogen laser, respectively), electrons from molecular orbitals corresponding to the 3p and 4p orbitals of the atoms are detached. The spectra reveal a rich fine structure not observed in earlier experiments. The data are compared with the results of quantum chemical calculations. A change in the pattern of the spectra near n=6 can be interpreted as a transition from planar to compact 3D structures. The spectrum of Al−13 agrees with the icosahedral structure predicted for this particle. The data do not agree with jellium model predictions. Differences between Al and Ga data can be correlated with the larger binding energy of the Ga 4s band.

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