Green's Function Calculation of a 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 bimetallic adhesion. This report discusses the electronic properties of a simple bimetallic junction. The method employed to investigate the interface were the Green's function technique and the phase shifts method. The Green's function of a simple junction within the tight-binding approximation was calculated. The conditions for the occurance of bound states was deduced from the poles of the Green's function. There are three types of wave functions associated with the interface. The first extends throughout the entire crystal, the second extends on one side of the interface only, whereas the third kind is localized near the interface. An expression for the change in density of states due to the creation of the interface was derived using the phase shift method. From this expression the corresponding single-particle contribution to the interface energy and the interface specific heat was derived.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1977
- Accession Number
- ADA041918
Entities
People
- A. Yaniv
Organizations
- University of California, San Diego