Local-environment effects in disordered binary metallic alloys
- 15 September 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 46 (12) , 7358-7362
- https://doi.org/10.1103/physrevb.46.7358
Abstract
The electronic structure of disordered alloys is studied by means of the embedded-cluster approximation. An exact expression is obtained for the Green function for a cluster of atoms embedded in an effective medium described by the coherent-potential approximation (CPA) for an arbitrary number of dimensions and size of the cluster. This approach is applied to investigate local-environment effects in disordered alloys, including short-range order. Contrary to previous work, states are found outside of the CPA band.Keywords
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