Energy Problem and Surface Science (2)

The Two Well Problem with Surface Energy

Let Ω be a bounded Lipschitz domain in IR, let H be a 2 × 2 diagonal matrix with det (H) = 1. Let > 0 and consider the functional

SURFACE SCIENCE LEITERS CALCULATION OF THE STRUCTURAL ENERGY OF THE UNRECONSTRUCTED AND (1 x 2) RECONSTRUCTED Pt(ll0) SURFACE

Describing the binding energy of both d and s valence electrons within the LCAO formalism, and by including repulsive Born-Mayer type interactions, we study the structural stability of the reconstructed and unreconstructed Pt(ll0) surfaces. Our main result is that amongst the various models for the (1 x2) reconstruction the “Bonzel-Ferrer” model is unfavoured, while the “missing-row” model seem...

Low-energy ion beamline scattering apparatus for surface science investigations

We report on the design, construction, and performance of a high current monolayers/ s , mass-filtered ion beamline system for surface scattering studies using inert and reactive species at collision energies below 1500 eV. The system combines a high-density inductively coupled plasma ion source, high-voltage floating beam transport line with magnet mass-filter and neutral stripping, decelerato...

The Potential Energy Surface of (NH3)2

Surface science and catalysis.

During the last 20 years, surface scientists have developed a variety of techniques that make it possible to study, on the molecular level, the structure, composition, and chemical bonding in the surface monolayer. Both single-crystal model catalysts and real catalyst systems that are active in important chemical processes have been investigated by a combination of ultrahigh-vacuum surface scie...