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Nature of insulating state in NaV2O5 above charge-ordering transition: A cluster dynamical mean-field study

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Title Nature of insulating state in NaV2O5 above charge-ordering transition: A cluster dynamical mean-field study
 
Creator MAZURENKO, VV
LICHTENSTEIN, AI
KATSNELSON, MI
DASGUPTA, I
SAHA-DASGUPTA, T
ANISIMOV, VI
 
Subject first-principles calculations
strongly correlated systems
d-wave superconductivity
filled ladder compound
spin-peierls compound
electronic-structure
alpha'-nav2o5
temperature
spectra
freedom
 
Description The nature of the insulating state driven by electronic correlations in the quarter-filled ladder compound alpha(')NaV(2)O(5) is investigated within a cluster dynamical mean-field approach. An extended Hubbard model with first-principles tight-binding parameters has been used. It is shown that the insulating state in the charge-disordered phase of this compound is formed due to the transfer of spectral density and dynamical charge fluctuations where for the latter, the role of intersite Coulomb interaction is found to be of crucial importance.
 
Publisher AMERICAN PHYSICAL SOC
 
Date 2011-07-17T17:22:00Z
2011-12-26T12:50:25Z
2011-12-27T05:34:39Z
2011-07-17T17:22:00Z
2011-12-26T12:50:25Z
2011-12-27T05:34:39Z
2002
 
Type Article
 
Identifier PHYSICAL REVIEW B, 66(8), -
1098-0121
http://dx.doi.org/10.1103/PhysRevB.66.081104
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4790
http://hdl.handle.net/10054/4790
 
Language en