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arXiv · 0704.0450

Disorder screening near the Mott-Anderson transition

M. C. O. Aguiar·V. Dobrosavljevic·E. Abrahams·G. Kotliar
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Abstract

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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M. C. O. Aguiar, V. Dobrosavljevic, E. Abrahams, G. Kotliar. 2007-04-03. Disorder screening near the Mott-Anderson transition. https://doi.org/10.1016/j.physb.2007.10.213

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