Unusually strong orbit-lattice interactions in the RVO3 Perovskites -: art. no. 235901

The thermal conductivity kappa(T) of the RVO3 crystals was measured. At T>T-infinity, RVO3 crystals conduct heat like a glass; the phonon contribution to kappa(T) is completely suppressed by spin and orbital fluctuations. In the interval T-NT-infinity, a phononlike kappa(T) was observed at T