Abstract
Angle-resolved electron distribution curves have been measured for two different excitation energies on heteroepitaxial C60(111) films. At ħω=29 eV, the limited k∥ resolution together with broadening induced by vibronic excitations results in a weak dependence of the peak positions and line shapes of the photoemission features on the emission angle. We demonstrate that at the low photon energy of ħω=8.1 eV the k∥ resolution becomes sufficient to resolve two bands in the feature derived from the highest-occupied molecular orbital which show a dispersion of the order of 400 meV.
Original language | English |
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Pages (from-to) | 14756-14759 |
Number of pages | 4 |
Journal | Physical review. B, Condensed matter |
Volume | 48 |
Issue number | 19 |
DOIs | |
Publication status | Published - 1993 |