C₆₀ Adsorbed on Platinum Surface: A Good Mediator of Metal Wave Function

Abstract

A combined spectroscopic and theoretical study has been performed to clarify the local electronic properties induced at the C 60 -Pt(111) interface. The C 60 molecules are regularly bound to the Pt(111) substrate via covalent bond, forming hybridized states just below the Fermi level ( E F ). Such a metallic feature is originated by strong Pt 5d-C 60 π couplings and is extended to the entire molecule, indicating that the adsorbed C 60 molecule serves as an excellent mediator of metal wave function. Our findings correspond well to an extremely high conductivity in C 60 bridged by a pair of Pt electrodes and will provide a useful guide for fabricating molecule-based devices.