Nonlinear Hall effect in Weyl semimetals induced by chiral anomaly
Rui-Hao Li, Olle Heinonen, A. A. Burkov, Steven S.-L. Zhang
Abstract
We predict a nonlinear Hall effect in certain Weyl semimetals with broken inversion symmetry. When the energy dispersions about pairs of Weyl nodes are skewed---the Weyl cones are ``tilted''---the concerted actions of the anomalous velocity and the chiral anomaly give rise to the nonlinear Hall effect. This Hall conductivity is linear in both electric and magnetic fields and depends critically on the tilting of the Weyl cones. We also show that this effect does not rely on a finite Berry curvature dipole, in contrast with the intrinsic quantum nonlinear Hall effect that was recently observed in type-II Weyl semimetals.
Topics & Concepts
Weyl semimetalChiral anomalyNonlinear systemSemimetalAnomaly (physics)Condensed matter physicsHall effectPhysicsTheoretical physicsMathematical physicsQuantum mechanicsFermionMagnetic fieldBand gapTopological Materials and PhenomenaGraphene research and applicationsAdvanced Condensed Matter Physics