Abstract
Based on detailed theoretical analyses, we present, for the first time, direct evidence that the significant interface dipole commonly observed for atoms and molecules physisorbed on metal surfaces originates from exchangelike effects. In the case of Xe, previously proposed contributions from chemical interactions do not play a significant role.
- Received 12 March 2002
DOI:https://doi.org/10.1103/PhysRevLett.89.096104
©2002 American Physical Society