Pressure Effect on the T²-Dependence in Electrical Resistivity of Exchange-Enhanced α-Ce

Abstract

The electrical resistivity of α-Ce was measured under high pressure up to 10 kbar and at temperatures down to 4.2 K. The coefficient of the T²-term in the electrical resistivity, which is related to the exchange enhancement factor, was obtained as a function of pressure, and complicated behavior of this term was found in the pressurizing and depressurizing processes at 77 K. From the experimental results the pressure dependences of the electronic specific heat constant γ and the magnetic susceptibility χ are calculated. The calculated result is found to be in agreement with the experimental values under high pressure.