Thermopower in an anisotropic two-dimensional Weyl semimetal

Abstract

We investigate the generation of an electric current from a temperature gradient in a two-dimensional Weyl semimetal with anisotropy, in both the presence and absence of a quantizing magnetic field. We show that the anisotropy leads to doping dependences of thermopower and thermal conductivities which are different from those in isotropic Dirac materials. Additionally, we find that a quantizing magnetic field in such systems leads to an interesting magnetic field dependence of the longitudinal thermopower, resulting in unsaturated thermoelectric coefficients. Thus the results presented here will serve as a guide to achieving high thermopower and a thermoelectric figure-of-merit in graphene-based materials, as well as organic conductors such as $\alpha$-(BEDT-TTF)${}_2$I${}_3$.

typos fixed

References in corpus (19)

• The electronic properties of graphene
• Thermoelectric and Magnetothermoelectric Transport Measurements of Graphene
• Berry phase effect in anomalous thermoelectric transport
• Topological Insulators and Nematic Phases from Spontaneous Symmetry Breaking in 2D Fermi Systems with a Quadratic Band Crossing
• Merging of Dirac points in a two-dimensional crystal
• The thermopower and Nernst Effect in graphene in a magnetic field
• A new magnetic field dependence of Landau levels on a graphene like structure
• Quantum oscillations, thermoelectric coefficients and the Fermi surface of semi-metallic WTe2
• Zero modes of tight binding electrons on the honeycomb lattice
• Thermoelectric properties of Weyl and Dirac semimetals
• Anomalous Nernst and Thermal Hall Effects in Tilted Weyl Semimetals
• A Nernst current from the conformal anomaly in Dirac and Weyl semimetals
• Interplay of Coulomb interactions and disorder in three dimensional quadratic band crossings without time-reversal symmetry and with unequal masses for conduction and valence bands
• Berry phase mediated topological thermoelectric transport in gapped single and bilayer graphene
• Fate of superconductivity in three-dimensional disordered Luttinger semimetals
• Anomalous thermoelectric phenomena in lattice models of multi-Weyl semimetals
• Giant Nernst-Ettingshausen oscillations in Semiclassically strong magnetic fields
• The semiclassical theory of anomalous transport in type-II topological Weyl semimetals
• Emergence of topological Mott insulators in proximity of quadratic band touching points

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• Non-linear transport without spin-orbit coupling or warping in two-dimensional Dirac semimetals
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• Thermoelectric response in nodal-point semimetals
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• Electric and thermoelectric response for Weyl and multi-Weyl semimetals in planar Hall configurations including the effects of strain
• Signatures of two- and three-dimensional semimetals from circular dichroism
• Floquet transmission in Weyl/multi-Weyl and nodal-line semimetals through a time-periodic potential well
• Thermoelectric properties of (an-)isotropic QGP in magnetic fields
• Electric, thermal, and thermoelectric magnetoconductivity for Weyl/multi-Weyl semimetals in planar Hall set-ups induced by the combined effects of topology and strain
• Direction-dependent conductivity in planar Hall set-ups with tilted Weyl/multi-Weyl semimetals
• Topological phase transition induced by band structure modulation in a Chern insulator
• Linear response in planar Hall and thermal Hall setups for Rarita-Schwinger-Weyl semimetals
• Transport properties in non-Fermi liquid phases of nodal-point semimetals
• Signatures of topology in generic transport measurements for Rarita-Schwinger-Weyl semimetals
• Thermoelectric response of nodal-line semimetals: probe of the Fermi surface topology
• Thermoelectric transport of type-I, II, and III massless Dirac fermions in two-dimensional lattice model
• Reflections of topological properties in the planar-Hall response for semimetals carrying pseudospin-1 quantum numbers
• Andreev bound states in Josephson junctions of semi-Dirac semimetals
• Thermoelectric effects of an interacting hadron gas in the presence of an external magnetic field
• Unconventional thermoelectric transport in tilted Weyl semimetals
• Quantum Hall effective action for anisotropic Dirac semi-metal
• Linear response of tilted anisotropic two-dimensional Dirac cones
• Disentangling contributions to longitudinal magnetoconductivity for Kramers-Weyl nodes
• Magneto-thermoelectricty of anisotropic two-dimensional materials
• Distinguishing features of longitudinal magnetoconductivity for a Rarita-Schwinger-Weyl node
• Probing imbalanced Weyl nodes in two-dimensional anisotropic Weyl semimetal via optical conductivity
• Thermoelectric Effect at Quantum Limit in Two-Dimensional Organic Dirac Fermion System with Zeeman Splitting