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

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Nakhmedov,  E. P.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Prigodin,  V. N.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Citation

Nakhmedov, E. P., Prigodin, V. N., & Şaşioğlu, E. (2002). Mesoscopic fluctuations of the density of states and conductivity in the middle of the band for disordered lattices. Physical Review B, 66(7): 075106. Retrieved from http://ojps.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRBMDO000066000007075106000001&idtype=cvips&gifs=yes.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002B-3717-C
Abstract
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.