Optoelectronic response of the type-I Weyl semimetals TaAs and NbAs from first principles
Christina A. C. Garcia, Jennifer Coulter, Prineha Narang
Abstract
The linear optoelectronic responses of Weyl semimetals TaAs and NbAs are evaluated by ab initio calculation of the complex dielectric function and optical conductivity for variable frequency, polarization, and temperature. The results agree well with existing experimental data for TaAs, provide quantitative predictions for NbAs, and suggest certain design principles for both Weyl-based devices and experimental detection of Weyl signatures.
Topics & Concepts
SemimetalCondensed matter physicsWeyl semimetalAb initioPhysicsConductivityFunction (biology)Ab initio quantum chemistry methodsOptoelectronicsDielectric responseMaterials scienceDielectricOptical conductivityDielectric functionVariable (mathematics)Electrical resistivity and conductivityQuantum mechanicsExperimental dataCurrent (fluid)Topological Materials and PhenomenaChemical and Physical Properties of Materials2D Materials and Applications