The Electronic Properties of a Simple Metal-Metal Interface.
Abstract
The properties of metal-metal interfaces are of interest in many metallurgical applications. These include grain boundaries, crack growth, friction and bi-metallic adhesion. The present work is a study of the electronic properties of a simple bimetallic junction. The methods employed to investigate the interface are the Green's function technique and the phase shifts method. Green's function of a simple junction within the tight-binding approximation is calculated. The conditions for the occurrance of bound states is deduced from the poles of the Green's function. It is shown that there are three types of wave functions associated with the interface. The first extends throughout the entire cyrstal, the second extends on one side of the interface only, whereas the third kind is localized near the interface. Using the phase shifts method an expression for the change in density of states due to the creation of the interface is derived. From this expression the corresponding single-particle contribution to the interface energy and the interface specific heat is derived.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1977
- Accession Number
- ADA046556
Entities
People
- Avishay Yaniv
- Walter Kohn
Organizations
- University of California, San Diego