2018/09/30 by Enrique Muñoz, Rodrigo Soto-Garrido
Materials Science · Physics and Astronomy · #2D Materials and Applications #Advanced Thermoelectric Materials and Devices #Band gap #Condensed matter physics #Materials science #Physics #Quantum mechanics #Semimetal #Thermoelectric effect #Thermoelectric materials #Topological Materials and Phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1063/1.5051966
published as Journal of Applied Physics 125, 082507 (2019) · 20 pages, 7 figures, 36 references. arXiv admin note: text overlap with arXiv:1803.10272
openalex publication_date 2018/12/04 · arxiv created 2018/12/05 · arxiv updated 2018/12/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In a recent paper [R. Soto-Garrido and E. Muñoz, J. Phys. Condens. Matter 30, 195302 (2018)], we studied the electronic transport properties in Weyl semimetals (WSMs) submitted to the combined effects of torsional mechanical strain and magnetic field, showing that this configuration induces a node-polarization effect on the current that can be used to measure the torsion angle from transmission experiments. In this article, we extend our previous work to study thermoelectric transport in WSMs under torsional strain and an external magnetic field. Our analysis involves only the electronic contribution to the transport coefficients, and it is thus valid at low temperatures where the phonon contribution is negligible. We provide exact analytical expressions for the scattering cross section and the transmitted heat current, in order to calculate the thermal conductance and the Seebeck coefficient under this configuration. Our results suggest that thermoelectric transport coefficients in these materials can be engineered by appropriately tuning the magnitude of the magnetic field, torsional strain, and the applied bias or thermal gradient, leading to a potentially very high figure of merit.