Pressure Effect on Transport Properties and Specific Heat of Kondo Compound Ce₃Pd₂₀Si₆

Abstract

We present the Hall constant, electrical resistivity, and low-temperature specific heat of the Kondo compound Ce₃Pd₂₀Si₆ under high pressures. The temperature dependence of the Hall constant and the electrical resistivity shows very large pressure effects which are characteristic of Kondo compounds. On the other hand, the low-temperature specific heat shows little pressure effect. This contrasting result is discussed, taking into account two crystallographic Ce sites with much different Kondo temperatures.