Charge-ordering phase transition and order-disorder effects in the Raman spectra of NaV2O5

Details Charge-ordering phase transition and order-disorder effects in the Raman spectra of NaV2O5 Charge-ordering phase transition and order-disorder effects in the Raman spectra of NaV2O5

2000-06-26

arxiv.org/abs/cond-mat/0006408v2

PRB 63, 100303 (2001)

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 4 figures, new version, to appear in PRB

Scientific paper

10.1103/PhysRevB.63.100303

In the ac polarized Raman spectra of NaV2O5 we have found anomalous phonon broadening, and an energy shift of the low-frequency mode as a function of the temperature. These effects are related to the breaking of translational symmetry, caused by electrical disorder that originates from the fluctuating nature of the V {4.5+} valence state of vanadium. The structural correlation length, obtained from comparisons between the measured and calculated Raman scattering spectra, diverges at T< 5 K, indicating the existence of the long-range charge order at very low temperatures, probably at T=0 K.

Affiliated with

Also associated with

No associations

Rating

Charge-ordering phase transition and order-disorder effects in the Raman spectra of NaV2O5 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Charge-ordering phase transition and order-disorder effects in the Raman spectra of NaV2O5, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Charge-ordering phase transition and order-disorder effects in the Raman spectra of NaV2O5 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-723450