title: Theoretical identification of the smallest fullerene, C20.
abstract: 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.
authors.affiliation: NEC Informatec Systems, Ltd., 34 Miyukigaoka, Tsukuba 305-8501, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Saito
authors.forename: Y
authors.initials: Y
authors.lastname: Miyamoto