Unusually strong orbit-lattice interactions in the RVO 3perovskites

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

doi:10.1103/PhysRevLett.93.235901

Unusually strong orbit-lattice interactions in the RVO ₃perovskites

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

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63 Scopus citations

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 T_N<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 language	English
Article number	235901
Journal	Physical Review Letters
Volume	93
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevLett.93.235901
State	Published - Dec 3 2004
Externally published	Yes

Funding

J. Q. Y. thanks Dr. Y. Ren and A. A. Nugroho for helpful discussion. The authors thank the NSF and the Robert A. Welch Foundation of Houston, TX for financial support.

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10.1103/PhysRevLett.93.235901

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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∞ 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.",

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Unusually strong orbit-lattice interactions in the RVO ₃perovskites

Abstract

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