Nature of insulating state in NaV${}_2$O${}_5$ above charge-ordering transition: a cluster DMFT study

Abstract

The nature of insulating state driven by electronic correlations in the quarter-filled ladder compound ${\alpha }^{\prime }$NaV${}_2$O${}_5$ is investigated within a cluster dynamical mean-field approach. An extended Hubbard model with first-principle tight-binding parameters have 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 inter-site Coulomb interaction is found to be of crucial importance.

4 pages, 4 figures

References in corpus (3)

• Deconfinement transition and Luttinger to Fermi Liquid crossover in quasi one-dimensional systems
• Modeling the electronic behavior of $\gamma$-LiV2O5: a microscopic study
• Low Energy Properties of Ferrimagnetic 2-leg Ladders: a Lanczos study

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