English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Effects of correlation on the conductivity of a two-dimensional weakly disordered lattice with particle-hole symmetric energy bands: Metal-insulator transition at half filling

MPS-Authors
/persons/resource/persons184798

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

/persons/resource/persons198036

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

Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available
Citation

Nakhmedov, E. P., Prigodin, V., Çaliskan, S., & Şaşioğlu, E. (2002). Effects of correlation on the conductivity of a two-dimensional weakly disordered lattice with particle-hole symmetric energy bands: Metal-insulator transition at half filling. Physical Review B, 66(23): 233105. Retrieved from http://ojps.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRBMDO000066000023233105000001&idtype=cvips&gifs=yes.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002B-367A-1
Abstract
The conductivity sigma(T) of a two-dimensional weakly disordered square lattice is studied at half-filling in the presence of the electron-electron correlations. The particle- hole symmetry, existing in the energy spectrum at half-filling, results in quantum corrections to sigma(T). The negative interaction contribution to sigma(T) in the weak localization regime, taking place far from half-filling, changes the sign due to the Bragg reflection assisted quantum corrections, and sigma(T) logarithmically increases with decreasing the temperature as half-filling is approached.