Temperature Dependence of the Electron Density of States and dc Electrical Resistivity of Disordered Binary Alloys
- 15 April 1972
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 5 (8), 2897-2924
- https://doi.org/10.1103/physrevb.5.2897
Abstract
A model calculation of the temperature dependence of the electronic density of states and the electrical conductivity of disordered binary alloys, based on the coherent-potential approximation (CPA) is made by introducing thermal disorder in the single-band model (Velický and others). Thermal disorder is found to broaden and smear the static-alloy density of states. The electrical resistivity in weak-scattering alloys always increases with temperature. However, in the strong-scattering case, the temperature coefficient of resistivity can be positive, zero, or negative, depending on the location of the Fermi energy.Keywords
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