Anderson-type model for a molecule adsorbed on a metal surface
  We investigate a modified Anderson model to study the local density of states (LDOS) of a molecular wire adsorbed on a metal. Using a self-consistent mean-field type approach we find an exponential decay of the LDOS along the molecule. A repulsive on-site interaction on the molecule suppresses the tunneling and decreases the characteristic decay length. 
Mahn-Soo Choi and C. Bruder (Univ. of Basel)