Zero-field Nernst effect in a ferromagnetic kagome-lattice Weyl-semimetal Co3Sn2S2
- Resource Type
- Working Paper
- Authors
- Guin, Satya N.; Vir, Praveen; Zhang, Yang; Kumar, Nitesh; Watzman, Sarah J.; Fu, Chenguang; Liu, Enke; Manna, Kaustuv; Schnelle, Walter; Gooth, Johannes; Shekhar, Chandra; Sun, Yan; Felser, Claudia
- Source
- Advanced Materials 2019, 31, 1806622
- Subject
- Condensed Matter - Materials Science
- Language
The discovery of magnetic topological semimetals 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. We report a zero-field Nernst effect in a newly discovered hard-ferromagnetic kagome-lattice Weyl-semimetal Co3Sn2S2. A maximum Nernst thermopower of 3 microvolt/K at 80 K in zero field is achieved in this magnetic Weyl-semimetal. Our 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.