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Localization in the CPA frame for alloys

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Zeitschrift für Physik B Condensed Matter

Abstract

To describe electron localization in substitutionally random alloysA c B 1−c the coherent potential approximation (CPA) is incorporated into the self-consistent theory of Anderson localization in the form developed by Vollhardt and Wölfle. Modifications of the localization theory arise from the tight-binding model with bimodal diagonal disorder of arbitrary strength. The mean-free path, correlation and localization lengths, and the zero-temperature conductivity are calculated at dimensionalityd=3. The metal-insulator transition is studied numerically for a CPA-induced band structure under semielliptical model assumptions.

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Authors and Affiliations

  1. Sektion Physik, Karl-Marx-Universität Leipzig, Linnéstrasse 5, DDR-7010, Leipzig, German Democratic Republic

    E. Kolley & W. Kolley

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  1. E. Kolley
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  2. W. Kolley
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Kolley, E., Kolley, W. Localization in the CPA frame for alloys. Z. Physik B - Condensed Matter 65, 7–14 (1986). https://doi.org/10.1007/BF01308394

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  • DOI: https://doi.org/10.1007/BF01308394

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