Abstract
We present measurements and analysis of the basal thermal conductivity for two dichalcogenides: -Ta and -Ta. The data which are obtained for the first time cover the range 80-400 K. The lattice contribution is important for each compound and possesses specific features related to charge-density-wave-type transitions; in particular, that of Ta exhibits a quite unusual upward jump. For Ta we use an order-disorder picture to explain both the lattice conductivity and the entropy variation in unison with the electrical resistivity.
- Received 4 February 1985
DOI:https://doi.org/10.1103/PhysRevLett.55.1931
©1985 American Physical Society