Interplay of Disorder and Correlations

Details Interplay of Disorder and Correlations Interplay of Disorder and Correlations

2000-02-07

arxiv.org/abs/cond-mat/0002091v1

Journal of Low Temperature Physics vol. 117 (1999) 235-239

Physics

Condensed Matter

Disordered Systems and Neural Networks

5 pages, 2 figures, requires jltp.sty (included)

Scientific paper

I address here the question of the mutual interplay of strong correlations and disorder in the system. I consider random version of the Hubbard model. Diagonal randomness is introduced {\it via} random on-site energies and treated by the coherent potential approximation. Strong, short ranged, electron - electron interactions are described by the slave boson technique and found to induce additional disorder in the system. As an example I calculate the density of states of the random interacting binary alloy and compare it with that for non-interacting system.

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