Thermoelectric power of CeTGe3 (T = Rh and Ir) under pressure

Thermoelectric power S(T) of CeRhGe3 and CeIrGe3 were measured from 6 to 280K and under pressure up to 1GPa. For both compounds, S(T) shows a positive maximum of 10-14μV/K at around 60K due to the kondo effect under influence of the crystalline electric field. At low temperatures, S(T) becomes to be negative and shows a clear negative peak at 10.5K for CeRhGe3 and a distinct kink at 8.7K for CeIrGe3. These anomalies are corresponding to the antiferromagnetic transitions. As pressure is applied, the positive maximum and the low temperature anomalies slightly shift to higher temperatures. At the same time intensities of the maximum and the peak are enhanced. It is suggests that both the Kondo effect and the magnetic correlation are increased by pressure.