Unusually strong orbit-lattice interactions in the RVO 3perovskites

J. Q. Yan, J. S. Zhou, J. B. Goodenough

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Abstract

The variation of the thermal conductivity κ(T) of RVO3 crystals with the motivation of probing the lattice dynamics associated with the transitions was investigated. It was found that at T>T, RVO3 crystals conduct heat like a glass and the phonon contribution to κ(T) was completely suppressed by spin and orbital fluctuations. The orbital ordering in the interval TN<T<T was partially restored due to spin fluctuations. A sharp change of κ(T) at T makes thermal conductivity measurement an alternative method to probe orbital order-disorder transition.

Original languageEnglish
Article number235901
JournalPhysical Review Letters
Volume93
Issue number23
DOIs
StatePublished - Dec 3 2004
Externally publishedYes

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