Adatom Dipole Moments on Metals and Their Interactions.
Abstract
An expression is derived for the dipole moment mu, associated with an arbitrary adatom on an arbitrary metal surface, in terms of the differential work done in moving the adatom from the interior of the metal to its actual position in the presence and absence, respectively, of a small, asymptotically uniform electric field on the exterior of the metal. With the aid of this expression it is shown for a jellium metal what the non-oscillatory part of the interaction energy of two dipoles mu(A) and mu(B), situated on the surface and separated by a large distance v, is. This value exceeds by a factor of 2 from the interaction energy of two dipoles in the same relative configuration but in a vacuum. The reason for the difference is that the screening charge of an adatom is delocalized on the metal surface.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1975
- Accession Number
- ADA015633
Entities
People
- King-hon Lau
- Walter Kohn
Organizations
- University of California, San Diego