Anderson-type model for a molecule adsorbed on a metal surface
Departement Physik und Astronomie, Universität Basel
Klingelbergstrasse 82, CH-4056 Basel, Switzerland
Accepted: 21 March 2000
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.
PACS: 73.40.Gk – Tunneling / 85.65.+h – Molecular electronic devices / 61.16.Ch – Scanning probe microscopy: scanning tunneling, atomic force, scanning optical, magnetic force, etc
© EDP Sciences, 2000