Multipocket synergy towards high thermoelectric performance in topological semimetal TaAs2
2024
High Thermoelectric Performance in TaAs2
publication
Evidence: high
Author Information
Author(s): Haihua Hu, Xiaolong Feng, Yu Pan, Vicky Hasse, Honghui Wang, Bin He, Claudia Felser
Primary Institution: Max Planck Institute for Chemical Physics of Solids
Hypothesis
Can we achieve both a large Nernst signal and an unsaturating magneto-Seebeck coefficient in TaAs2?
Conclusion
The study demonstrates that TaAs2 can achieve high thermoelectric performance through a multipocket synergy strategy.
Supporting Evidence
- TaAs2 exhibits a large Nernst signal and a high magneto-Seebeck coefficient.
- The power factors achieved are ~3100 μW cm−1 K−2 for transverse and ~50 μW cm−1 K−2 for longitudinal thermoelectric performance.
- The study presents a feasible approach for optimizing thermoelectric performance in topological semimetals.
Takeaway
The researchers found a way to make a special material, TaAs2, work really well for cooling and power generation by using its unique properties.
Methodology
The study used high-quality TaAs2 single crystals to investigate their electrical and thermal transport properties.
Digital Object Identifier (DOI)
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