Geometrically averaged density of states as a measure of localization

Yun Song; W. A. Atkinson; R. Wortis

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Geometrically averaged density of states as a measure of localization

机译：状态的几何平均密度作为定位的度量

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Motivated by current interest in disordered systems of interacting electrons, the effectiveness of the geometrically averaged density of states, ρ_g(ω), as an order parameter for the Anderson transition is examined. In the context of finite-size systems we examine complications which arise from finite energy resolution. Furthermore we demonstrate that even in infinite systems a decline in ρ_g(ω) with increasing disorder strength is not uniquely associated with localization.

机译：受当前对相互作用电子的无序系统的兴趣所激发，研究了几何平均状态密度ρ_g（ω）作为安德森跃迁的阶跃参数的有效性。在有限尺寸系统的背景下，我们研究了由有限能量分辨率引起的复杂性。此外，我们证明，即使在无限大的系统中，随着无序强度的增加ρ_g（ω）的下降也不是唯一与局部性相关的。

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来源
《Physical review》 |2007年第4期|045105.1-045105.7|共7页
作者
Yun Song; W. A. Atkinson; R. Wortis;
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作者单位

Department of Physics & Astronomy, Trent University, 1600 West Bank Drive, Peterborough, Ontario, Canada K9J 7B8;

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原文格式 PDF
正文语种 eng
中图分类固体物理学;
关键词
metal-insulator transitions and other electronic transitions; theories and models; localized states; electronic structure of disordered solids; strongly correlated electron systems; heavy fermions;

机译：金属-绝缘体过渡和其他电子过渡;理论和模型;局部状态;无序固体的电子结构;强相关电子系统;重费米子;

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机译：几何平均密度的状态作为衡量本土化

Geometrically averaged density of states as a measure of localization

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