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Disorder screening near the Mott-Anderson transition

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arxiv 0704.0450 v1 pith:NJKPEMIH submitted 2007-04-03 cond-mat.str-el

M. C. O. Aguiar , V. Dobrosavljevic , E. Abrahams , G. Kotliar This is my paper · ORCID
classification cond-mat.str-el
keywords disorderscreeningmott-andersonstronglytransitionappliescharacterizingcorrelated
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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).

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