Large, nonsaturating thermopower in a quantizing magnetic field
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eaat2621.full.pdf
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392.07 KB
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Adobe PDF
Checksum (MD5)
75da5b1061964b78d8825c1c55d08281
Author(s)
Skinner, Brian J
Fu, Liang
Date Issued
May 2018
Journal
Science Advances
Publisher
American Association for the Advancement of Science (AAAS)
Citation
Skinner, Brian, and Liang Fu. “Large, Nonsaturating Thermopower in a Quantizing Magnetic Field.” Science Advances 4, no. 5 (May 2018): eaat2621.
Version
Final published version
Abstract
The thermoelectric effect is the generation of an electrical voltage from a temperature gradient in a solid material due to the diffusion of free charge carriers from hot to cold. Identifying materials with a large thermoelectric response is crucial for the development of novel electric generators and coolers. We theoretically consider the thermopower of Dirac/Weyl semimetals subjected to a quantizing magnetic field. We contrast their thermoelectric properties with those of traditional heavily doped semiconductors and show that, under a sufficiently large magnetic field, the thermopower of Dirac/Weyl semimetals grows linearly with the field without saturation and can reach extremely high values. Our results suggest an immediate pathway for achieving record-high thermopower and thermoelectric figure of merit, and they compare well with a recent experiment on Pb1–xSnxSe.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
Terms of Use
Creative Commons Attribution-NonCommercial 4.0 International
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1126/sciadv.aat2621
