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Electric and thermal transport properties of topological insulator candidate LiMgBi*
- Source :
- Chinese Physics B. 30:127101
- Publication Year :
- 2021
- Publisher :
- IOP Publishing, 2021.
-
Abstract
- We report the transport properties of a topological insulator candidate, LiMgBi. The electric resistivity of the title compound exhibits a metal-to-semiconductor-like transition at around 160 K and tends to saturation below 50 K. At low temperatures, the magnetoresistance is up to ∼260 % at 9 T and a clear weak antilocalization effect is observed in the low magnetic-field region. The Hall measurement reveals that LiMgBi is a multiband system, where hole-type carriers (n h ∼ 1018 cm−3) play a major role in the transport process. Remarkably, LiMgBi possess a large Seebeck coefficient ∼440 μV/K) and a moderate thermal conductivity at room temperature, which indicate that LiMgBi is a promising candidate in thermoelectric applications.
Details
- ISSN :
- 16741056
- Volume :
- 30
- Database :
- OpenAIRE
- Journal :
- Chinese Physics B
- Accession number :
- edsair.doi...........6df740b49ea9b6b47bdc4379007c17c1