X-ray anomalous scattering investigations on the charge order in $α^\prime$-NaV$_2$O$_5$

Details X-ray anomalous scattering investigations on the charge order in $α^\prime$-NaV$_2$O$_5$ X-ray anomalous scattering investigations on the charge order in $α^\prime$-NaV$_2$O$_5$

2001-09-05

arxiv.org/abs/cond-mat/0109091v1

Physics

Condensed Matter

Strongly Correlated Electrons

Submitted to Phys. Rev. Lett., 4 pages, 4 eps figures inserted in the text

Scientific paper

10.1103/PhysRevB.65.180101

Anomalous x-ray diffraction studies show that the charge ordering in $\alpha^\prime$-NaV$_2$O$_5$ is of zig-zag type in all vanadium ladders. We have found that there are two models of the stacking of layers along \emph{c-}direction, each of them consisting of 2 degenerated patterns, and that the experimental data is well reproduced if the 2 patterns appears simultaneously. We believe that the low temperature structure contains stacking faults separating regions corresponding to the four possible patterns.

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