Second-order perturbation treatment of correlations in transition metal alloys

✍ Scribed by V. Drchal; J. Kudrnovský

• Publisher: John Wiley and Sons
• Year: 1983
• Tongue: English
• Weight: 567 KB
• Volume: 116
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.2221160115

✦ Synopsis

Abstract

Correlation effects in disordered transition metal alloys are studied within the degenerated Hubbard model using the perturbation theory limited to the second order in U/w (U Coulomb integral, w bandwidth). The influence of disorder is included within the coherent potential approximation. The theory is illustrated on a simple model of the copper–nickel alloy.