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

V. V. Mazurenko, A. I. Lichtenstein, M. I. Katsnelson +3

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 ap…