Evidence of Kondo effect in thermal conductivity of PrSn3

Abstract We present measurements of the thermal conductivity of both PrSn3 and LaSn3 compounds. We deduce the “magnetic thermal resistivity” Wmag of PrSn3 and show that WmagT exhibits a Log T behavior characteristic of the Kondo effect. The theoretical analysis of the thermal conductivity measurements offers a new method to study the Kondo effect, especially in the case of a praseodymium compound.