Nonlinear Hall effect in topological insulator Bi2Te3 with hexagonal warping
Abdullah Yar, Jasra, K. Sabeeh
Abstract
A new addition to the family of Hall effects is the nonlinear Hall effect. We investigate the role of hexagonal warping of the band structure of surface Dirac fermions in the nonlinear Hall effect in 3D topological insulators. Most relevant to our study is Bi2Te3, where we show that its surface states exhibit pronounced nonlinear Hall effect in the presence of warping. We investigate this nonlinear Hall effect as a function of Fermi energy, bandgap, warping strength, and temperature.
Topics & Concepts
Image warpingTopological insulatorCondensed matter physicsHall effectNonlinear systemPhysicsSurface statesTopology (electrical circuits)Materials scienceSurface (topology)GeometryQuantum mechanicsMathematicsElectrical resistivity and conductivityComputer scienceCombinatoricsArtificial intelligenceTopological Materials and PhenomenaGraphene research and applicationsAtomic and Subatomic Physics Research