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arXiv 0802.2627cond-mat.str-el
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具有次近邻跳跃和长程关联无序的Falicov-Kimball模型的安德森局域化

Anderson localization on Falicov-Kimball model with next-nearest-neighbor hopping and long-range correlated disorder

D. O. Maionchi, A. M. C. Souza, H. J. Herrmann, R. N. da Costa Filho

摘要:

在动力学平均场论的框架下,计算了具有最近邻和次最近邻跳跃的Anderson-Falicov-Kimball模型关联无序电子系统的相图。使用几何平均值和算术平均值根据系统的化学势分析半填充带。我们还介绍了现场能源表现出远程相关的障碍,它产生了一个系统与随机独立变量分布所创建的一个类似的特性。相关障碍的减少减少了扩展相。

英文摘要:

The phase diagram of correlated, disordered electron systems is calculated within dynamical mean-field theory for the Anderson-Falicov-Kimball model with nearest-neighbors and next-nearest-neighbors hopping. The half-filled band is analyzed in terms of the chemical potential of the system using the geometric and arithmetic averages. We also introduce the on-site energies exhibiting a long-range correlated disorder, which generates a system with similar characteristics as the one created by a random independent variable distribution. A decrease in the correlated disorder reduces the extended phase.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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