Abstract
We have used scanning tunneling spectroscopy to spatially map the energy-resolved local density of states of individual molecules on the Ag(100) surface. Spectral maps were obtained for molecular states derived from the HOMO, LUMO, and orbitals, revealing new details of the spatially inhomogeneous local electronic structure. Spatial inhomogeneities are explained using ab initio pseudopotential density functional calculations. These calculations emphasize the need for explicitly including the interaction and STM tip trajectory to understand the observed local electronic structure.
- Received 22 July 2002
DOI:https://doi.org/10.1103/PhysRevLett.90.096802
©2003 American Physical Society