High thermoelectric performance in Bi88Sb12
Author Information
Author(s): Pan Yu, He Bin, Feng Xiaolong, Li Fan, Chen Dong, Burkhardt Ulrich, Felser Claudia
Primary Institution: Max Planck Institute for Chemical Physics of Solids, Dresden, Germany
Hypothesis
Can a small magnetic field enhance the thermoelectric performance of topological materials?
Conclusion
The study demonstrates that applying a magnetic field to Bi88Sb12 significantly enhances its thermoelectric figure of merit.
Supporting Evidence
- The maximum thermoelectric figure of merit zT achieved was 1.7 at 180K and 0.7T.
- The large magneto-Seebeck effect is attributed to the ultrahigh mobility and linear band dispersion of the material.
- The study fills a gap for high-performance thermoelectric materials below 300K.
Takeaway
Using a magnetic field can make certain materials better at turning heat into electricity, and this study shows that it works really well for a material called Bi88Sb12.
Methodology
The researchers grew single crystals of Bi88Sb12 and measured their thermoelectric properties under varying magnetic fields and temperatures.
Limitations
The study primarily focuses on a specific temperature range and may not generalize to all topological materials.
Statistical Information
Confidence Interval
±0.2
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website