V-V Bond-Length Fluctuations in Vox

Details V-V Bond-Length Fluctuations in Vox V-V Bond-Length Fluctuations in Vox

2002-11-11

arxiv.org/abs/cond-mat/0211208v1

Physics

Condensed Matter

5 pages, 5 figures

Scientific paper

10.1209/epl/i2003-00161-8

We report a significantly stronger suppression of the phonon contribution to the thermal conductivity in VOx than can be accounted for by disorder of the 16 % atomic vacancies present in VO. Since the transition from localized to itinerant electronic behavior is first-order and has been shown to be characterized by bond-length fluctuations in several transition-metal oxides with the perovskite structure, we propose that cooperative V-V bond-length fluctuations play a role in VO similar to the M-O bond-length fluctuations in the perovskites. This model is able to account for the strong suppression of the thermal conductivity, the existence of a pseudogap confirmed by thermoelectric power, an anomalously large Debye-Waller factor, the temperature dependence of the magnetic susceptibility, and the inability to order atomic vacancies in VO.

Affiliated with

Also associated with

No associations

Rating

V-V Bond-Length Fluctuations in Vox 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 V-V Bond-Length Fluctuations in Vox, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and V-V Bond-Length Fluctuations in Vox will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-27973