Elastic constants and charge ordering inα′−NaV2O5
- 1 October 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 60 (13), 9194-9197
- https://doi.org/10.1103/physrevb.60.9194
Abstract
We present the temperature dependence of shear and longitudinal elastic constants in For the longitudinal and modes we find anomalies at in contrast to the spin-Peierls substance where only the longitudinal mode along the chain shows a pronounced anomaly at The shear mode (propagation along the chain in b direction, polarization in a direction) shows strong softening of 12%. Such a large effect is absent for all shear modes in We can interpret this softening with a coupling of the symmetry strain to the charge fluctuation of symmetry. We give the possible low-temperature charge distribution.
Keywords
This publication has 20 references indexed in Scilit:
- Mixed valency and charge ordering in α′-NaV2O5Physical Review B, 1999
- Specific heat ofin magnetic fields up to 16 TPhysical Review B, 1999
- Inversion Symmetry in the Spin-Peierls Compound α'-NaV2O5Acta Crystallographica Section C Crystal Structure Communications, 1998
- Thermodynamic, transport and magnetic properties of α′-NaV 2 O 5Europhysics Letters, 1998
- Interference of a first-order transition with the formation of a spin-Peierls state in -Physical Review B, 1998
- Magnetic resonance in the spin-Peierls compoundα′−NaV2O5Physical Review B, 1998
- Electron spin resonance in the spin-Peierls compoundPhysical Review B, 1997
- Experimental evidence for a spin-Peierls-transition inZeitschrift für Physik B Condensed Matter, 1997
- Temperature Dependence of the Elastic ConstantsPhysical Review B, 1970
- Elastic and Magnetoelastic Effects in MagnetitePhysical Review B, 1969