Theoretical identification of the smallest fullerene, C20.
By using first-principles calculations, we calculate the vibronic fine structure in photoelectron spectra of C-20 clusters. Based on our results, we assign one of the recently observed spectra [H. Prinzbach et al., Nature (London) 407, 60 (2000)] to the fullerene structure and, therefore, confirm the experimental claim that the smallest fullerene is really synthesized.
Saito
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M
NEC Informatec Systems, Ltd., 34 Miyukigaoka, Tsukuba 305-8501, Japan.
Miyamoto
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Y