Ultraviolet photoelectron spectra of C86 and C90.

Abstract

Ultraviolet photoelectron spectra of higher fullerenes, ${\mathrm{C}}_{86}$ and ${\mathrm{C}}_{90}$, both of them having ${\mathit{C}}_{2}$ symmetry, are measured with a synchrotron radiation light source. The spectral bands above 4.5 eV are characteristic of individual fullerenes, while those below 5 eV resemble each other and are similar to other higher fullerenes. Upon the incident-photon energy change, the intensity of the bands oscillates and their peak positions shift. The bands above 5 eV of both ${\mathit{C}}_{2}$-${\mathit{C}}_{86}$ and ${\mathit{C}}_{2}$-${\mathit{C}}_{90}$ show a similar incident-photon-energy-dependent intensity oscillation. \textcopyright{} 1996 The American Physical Society.