Report
Coherent potential theory of a random binary alloy Effects of scattering from two-sites clusters and off-diagonal randomness
21 Mar 1974
Abstract
Extension of the single-site coherent potential approximation for random binary alloys to include the effect of off-diagonal randomness and pair scattering. This extension is achieved by analyzing a one-band model of a random binary alloy in terms of a two-sites coherent potential approximation. Numerical results are presented for a number of different alloys. In the overlapping-band case, the presence of off-diagonal randomness is shown to modify the bandwidths to values larger than those obtained from the virtual-crystal approximation. A simple iterative procedure is described for overcoming the convergence difficulties in the split-band case. In this limit, the inclusion of pair scattering and off-diagonal randomness is found to lead to the appearance of structure in the density of states of the minority component band.
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Details
- Title
- Coherent potential theory of a random binary alloy Effects of scattering from two-sites clusters and off-diagonal randomness
- Creators
- K. Moorjani - Johns Hopkins UniversityT. Tanaka - Catholic UniversityM. M. Sokoloski - U.S. Army, Harry Diamond Laboratories, WashingtonS. M. Bose - Drexel University
- Publisher
- Legacy CDMS
- Resource Type
- Report
- Language
- English
- Academic Unit
- [Retired Faculty]
- Identifiers
- 991019292225804721