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Criterion of applicability of coherent-potential approximation at low impurity concentrations

机译:低杂质浓度下相干势近似的适用性准则

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摘要

Criterion of applicability of the coherent-potential approximation (CPA) in the case of three-dimensional systems is suggested. The energy range in which the CPA remains valid is determined. Its bounding energy agrees closely with the expected position of the mobility edge in the disordered system previously confirmed by extensive numerical simulations. The spectrum's rearrangement with increasing impurity concentration is described in detail. (c) 2006 Elsevier B.V. All rights reserved.
机译:建议在三维系统中应用相干势近似(CPA)的准则。确定CPA保持有效的能量范围。它的边界能与先前由广泛的数值模拟证实的无序系统中迁移率边缘的预期位置非常吻合。详细描述了随着杂质浓度增加而发生的光谱重排。 (c)2006 Elsevier B.V.保留所有权利。

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