Mesoscopic fluctuations of the density of states and conductivity in the middle of the band for disordered lattices

Article

关键词: UNIVERSAL CONDUCTANCE FLUCTUATIONS;    HALF-FILLED BAND;    SYSTEMS;    METALS;    LOCALIZATION;    TEMPERATURE;    STATISTICS;    CRYSTALS;    FIELD;   

DOI  :  10.1103/PhysRevB.66.075106

来源: SCIE

【 摘 要 】

The mesoscopic fluctuations of the density of electronic states 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.

【 授权许可】

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