Spatially mapping the spectral density of a single C60 molecule -: art. no. 096802

We have used scanning tunneling spectroscopy to spatially map the energy-resolved local density of states of individual C-60 molecules on the Ag(100) surface. Spectral maps were obtained for molecular states derived from the C-60 HOMO, LUMO, and LUMO+1 orbitals, revealing new details of the spatially inhomogeneous C-60 local electronic structure. Spatial inhomogeneities are explained using ab initio pseudopotential density functional calculations. These calculations emphasize the need for explicitly including the C-60-Ag interaction and STM tip trajectory to understand the observed C-60 local electronic structure.