Zero-Field Nernst Effect in a Ferromagnetic Kagome-Lattice Weyl-Semimetal Co<sub>3</sub> Sn<sub>2</sub> S<sub>2</sub>.
basic_science · Level V
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- Record sourced from PubMed, PMID 31044469.
- Also identified by DOI 10.1002/adma.201806622.
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Abstract
The discovery of magnetic topological semimetals has recently attracted significant attention in the field of topology and thermoelectrics. In a thermoelectric device based on the Nernst geometry, an external magnet is required as an integral part. Reported is a zero-field Nernst effect in a newly discovered hard-ferromagnetic kagome-lattice Weyl-semimetal Co<sub>3</sub> Sn<sub>2</sub> S<sub>2</sub> . A maximum Nernst thermopower of ≈3 µV K<sup>-1</sup> at 80 K in zero field is achieved in this magnetic Weyl-semimetal. The results demonstrate the possibility of application of topological hard magnetic semimetals for low-power thermoelectric devices based on the Nernst effect and are thus valuable for the comprehensive understanding of transport properties in this class of materials.