Mesoscopic fluctuations of the Density of States and Conductivity in the middle of the band of Disordered Lattices

Details Mesoscopic fluctuations of the Density of States and Conductivity in the middle of the band of Disordered Lattices Mesoscopic fluctuations of the Density of States and Conductivity in the middle of the band of Disordered Lattices

2002-03-21

arxiv.org/abs/cond-mat/0203432v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevB.66.075106

The mesoscopic fluctuations of the Density of electronic States (DoS) and of the conductivity of two- and three- dimensional lattices with randomly distributed substitutional impurities are studied. Correlations of the levels lying above (or below) the Fermi surface, in addition to the correlations of the levels lying on opposite sides of the Fermi surface, take place at half filling due to nesting. The Bragg reflections mediate to increase static fluctuations of the conductivity in the middle of the band which change the distribution function of the conductivity at half- filling.

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