Nernst Thermopower of Time-Reversal Breaking Type-II Weyl Semimetals
arXiv:1808.06580 · doi:10.1103/PhysRevB.99.245119
Abstract
Weyl semimetals host linear energy dispersions around Weyl nodes, as well as monopoles of Berry curvature in momentum space around these points. These features give rise to unique transport signatures in a Weyl semimetal, such as transverse transport without an applied magnetic field, known as anomalous transport. The type-II Weyl semimetal, recently experimentally demonstrated in several materials, is classified by a tilting of the Weyl nodes. This paper provides a theoretical study on thermoelectric transport in time-reversal breaking type-II Weyl semimetals. Our results examine the balance between anomalous and non-anomalous contributions to the Nernst effect when subject to an external magnetic field. We also show how increasing scattering times have on enhancing effect on thermoelectric transport in these materials. Since a temperature-dependent chemical potential has been theoretically shown to be paramount when considering anomalous transport, we also study how similar considerations impact the Nernst thermopower in the non-anomalous case.
arXiv comment9 pages, 4 figures
References in corpus (33)
- Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
- Weyl and Dirac Semimetals in Three Dimensional Solids
- Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
- Type-II Weyl Semimetals
- Topological Materials: Weyl Semimetals
- Experimental discovery of Weyl semimetal TaAs
- Observation of the chiral anomaly induced negative magneto-resistance in 3D Weyl semi-metal TaAs
- Chiral Anomaly and Classical Negative Magnetoresistance of Weyl Metals
- Observation of Weyl nodes in TaAs
- Anomalous Hall Effect and Magnetic Monopoles in Momentum-Space
- Signatures of the Adler-Bell-Jackiw chiral anomaly in a Weyl Fermion semimetal
- Prediction of the Weyl semimetal in the orthorhombic MoTe2
- Berry phase effect in anomalous thermoelectric transport
- The chiral anomaly and thermopower of Weyl fermions in the half-Heusler GdPtBi
- Spectroscopic evidence for type II Weyl semimetal state in MoTe2
- Observation of the Type-II Weyl Semimetal Phase in MoTe2
- MoTe2: A Type-II Weyl Topological Metal
- Discovery of Weyl fermion semimetals and topological Fermi arc states
- Tilted anisotropic Dirac cones in quinoid-type graphene and alpha-(BEDT-TTF)_2I_3
- Thermoelectric properties of Weyl and Dirac semimetals
- Temperature induced Lifshitz transition in WTe2
- Energy Magnetization and Thermal Hall Effect
- Axial anomaly and longitudinal magnetoresistance of a generic three dimensional metal
- Nernst and magneto-thermal conductivity in a lattice model of Weyl fermions
- Chiral anomaly, dimensional reduction, and magnetoresistivity of Weyl and Dirac semimetals
- Boltzmann-equation approach to anomalous transport in a Weyl metal
- Dirac dispersion generates large Nernst effect in Weyl semimetals
- Unsaturated both large positive and negative magnetoresistance in Weyl Semimetal TaP
- Minimal models for topological Weyl semimetals
- Anomalous Nernst and Thermal Hall Effects in Tilted Weyl Semimetals
- Thermoelectric transport in double-Weyl semimetals
- The semiclassical theory of anomalous transport in type-II topological Weyl semimetals
- Fermi arc mediated entropy transport in topological semimetals