Thermoelectric transport in torsional strained Weyl semimetals
arXiv:1809.10291 · doi:10.1063/1.5051966
Abstract
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.
arXiv comment20 pages, 7 figures, 36 references. arXiv admin note: text overlap with arXiv:1803.10272
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Cited by in corpus (7)
- Dynamical Piezomagnetic Effect in Time-Reversal Invariant Weyl Semimetals with Axionic Charge-Density Waves
- Chebyshev Polynomial Method to Landauer-Büttiker Formula of Quantum Transport in Nanostructures
- Phonon helicity and Nieh-Yan Anomaly in the Kramers-Weyl semimetals of Chiral Crystals
- Thermoelectric transport in graphene under strain fields modeled by Dirac oscillators
- Electromagnetic coupling and transport in a topological insulator-graphene hetero-structure
- Thermo-magneto-electric transport through a torsion dislocation in a type I Weyl Semimetal
- Thermoelectric relations in the conformal limit in Dirac and Weyl semimetals