Growth of nanographite on Pt(111) and its edge state

The nanographite grains, the diameter of which was around 5 nm, were formed on Pt(III) by exposing the Pt(III) substrate to benzene gas at room temperature and annealing it up to 850 K. The increase of relative number of edge atoms enabled the observation of edge-derived electronic states. The measurement of ultraviolet photoelectron spectroscopy and near edge x-ray absorption fine structure on the nanographite revealed the appearance of the edge state located at the Fermi level.