Short-range interaction effects on the density of states of disordered 
two-dimensional crystals with a half filled band

Nakhmedov, Enver P.; Prigodin, VN

doi:10.1103/PhysRevB.65.235107

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Short-range interaction effects on the density of states of disordered two-dimensional crystals with a half filled band

MPS-Authors

/persons/resource/persons184798

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

External Resource

https://arxiv.org/pdf/cond-mat/0210209.pdf
(Publisher version)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

0210209.pdf
(Preprint), 148KB

Supplementary Material (public)

There is no public supplementary material available

Citation

Nakhmedov, E. P., & Prigodin, V. (2002). Short-range interaction effects on the density of states of disordered two-dimensional crystals with a half filled band. Physical Review B, 65(23): 235107. doi:10.1103/PhysRevB.65.235107.

Cite as: https://hdl.handle.net/21.11116/0000-0003-2A59-B

Abstract

The density of electronic states (DOS) of a two-dimensional square lattice with substitutional impurities is calculated in the presence of short-range electron-electron interactions. In the middle of the energy band, the Bragg reflections off the Brillouin zone boundary are shown to lead to additional quantum corrections to the DOS, the sign of which is opposite to the sign of the Altshuler-Aronov logarithmic correction. The resulting quantum correction to the DOS at half-filling is positive; i.e., the DOS increases logarithmically as the Fermi energy is approached. However, far from the commensurate points where the Bragg reflections are suppressed, the negative logarithmic corrections to the DOS survive.