Anomalously large thermoelectric cooling figure of merit in the Kondo systems CePd3 and Celn3

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Abstract
Measurements of thermopower, resistivity, and thermal conductivity for the rare‐earth intermetallic compounds CePd3 and CeIn3 indicate an anomalously large Peltier effect cooling figure of merit at low temperatures associated with a large thermopower. Resistivity and susceptibility measurements indicate that these compounds possess localized Ce 4f electrons which give rise to the Kondo effect and thermopower enhancement. These results suggest that a survey of Ce intermetallic compounds could lead to new materials for low‐temperature thermoelectric cooling applications.

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