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arXiv 0704.0450cond-mat.str-el
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Mott-Anderson转变附近的无序屏蔽

Disorder screening near the Mott-Anderson transition

M. C. O. Aguiar, V. Dobrosavljevic, E. Abrahams, G. Kotliar

摘要:

在Mott-Anderson跃迁的典型介质动力学平均场论(TMT-DMFT)中研究了关联驱动的无序屏蔽。在强关联区,表征有效无序势的格位能ε_R^i由于近藤钉扎现象而被强重整化。当相互作用U强于无序W时,这种效应产生非常强的屏蔽,但只适用于相反极限(U<W)的一小部分位点。

英文摘要:

Correlation-driven screening of disorder is studied within the typical-medium dynamical mean-field theory (TMT-DMFT) of the Mott-Anderson transition. In the strongly correlated regime, the site energies epsilon_R^i characterizing the effective disorder potential are strongly renormalized due to the phenomenon of Kondo pinning. This effect produces very strong screening when the interaction U is stronger then disorder W, but applies only to a fraction of the sites in the opposite limit (U<W).

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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