Zigzag Charge Ordering in alpha'-NaV2O5

Abstract

23Na NMR spectrum measurements in alpha'-NaV2O5 with a single- crystalline sample are reported. In the charge-ordered phase, the number of inequivalent Na sites observed is more than that expected from the low-temperature structures of space group Fmm2 reported so far. This disagreement indicates that the real structure including both atomic displacement and charge disproportionation is of lower symmetry. It is suggested that zigzag ordering is the most probable. The temperature variation of the NMR spectra near the transition temperature is incompatible with that of second-order transitions. It is thus concluded that the charge ordering transition is first-order.

4 pages, 5 eps figures, submitted to J. Phys. Soc. Jpn

References in corpus (2)

• Response: Spin-Singlet clusters in the ladder compound NaV2O5
• Charge Order Driven spin-Peierls Transition in NaV2O5

Cited by in corpus (12)

• Magnetic light scattering in low-dimensional quantum spin systems
• Ab initio evaluation of the charge-ordering in ${\alpha }^{\prime }Na{V}_2{O}_5$
• Low-Temperature Structure of the Quarter-Filled Ladder Compound alpha'-NaV2O5
• X-ray anomalous scattering investigations on the charge order in ${\alpha }^{\prime }$-NaV${}_2$O${}_5$
• Charge-Order Pattern of the Low-Temperature Phase of NaV2O5 Uniquely Determined by Resonant X-Ray Scattering from Monoclinic Single Domain
• Lattice vibrations of alpha'-NaV_2O_5 in the low-temperature phase. Magnetic bound states?
• Nature of insulating state in NaV${}_2$O${}_5$ above charge-ordering transition: a cluster DMFT study
• Orthorhombic versus monoclinic symmetry of the charge-ordered state of NaV2O5
• One-dimensional dynamics of the d-electrons in ${\alpha }^{\prime }$-NaV${}_2$O${}_5$
• A microscopic model for the structural transition and spin gap formation in alpha'-NaV2O5
• Charge Ordered Insulator without Magnetic Order Studied by Correlator Projection Method
• Dzyaloshinskii-Moriya interaction in NaV${}_2$O${}_5$: a microscopic study