Abstract
The thermoelectric power, S, of PrInAg 2 was measured at the temperature range down to 0.1 K to clarify whether the thermoelectric-power coefficient, S / T , is enhanced at low temperatures or not. PrInAg 2 has a huge enhancement of electronic-specific heat coefficient, C / T , at low temperatures, and the S / T is well known to correlate with the C / T for Ce-based heavy-fermion compounds. The value of | S | / T obtained is, however, 0.01 μ V / K 2 at most, and there is no indication of the enhancement of S / T . These observations suggest that the conduction electrons at E F does not correlate with the 4f electrons of Pr atoms and that the enhancement of C / T is not due to the Kondo effect. We propose a quadrupole-fluctuation model to explain this enhancement of C / T of PrInAg 2 at low temperatures.
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