Localization in Disordered Materials: Binary Alloys
- 24 August 1970
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 25 (8) , 520-524
- https://doi.org/10.1103/physrevlett.25.520
Abstract
A criterion for localization of electron states in disordered materials is presented. Applications to binary alloys, made using the self-energy calculated in the coherent-potential approximation, confirm the Mott-Cohen-Fritzsche-Ovshinsky model in detail. Mobility edges occur inside the band edges. A mobility gap can appear within the band. The band can split into sub-bands, each with mobility edges. Below a critical concentration, an Anderson transition, where the minority sub-band becomes entirely localized, can occur.Keywords
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