Chiral anomaly induced nonlinear Hall effect in semimetals with multiple Weyl points

After the experimental realization, Berry curvature dipole (BCD) induced nonlinear Hall effect (NLHE) has attracted tremendous interest to condensed matter community. Here, we investigate another family of effect, namely, chiral anomaly (CNHE) in multi-Weyl semimetal (mWSM). In contrast BCD-induced NLHE, CNHE appears because combination both and anomalous velocity due nontrivial curvature. Using semiclassical Boltzmann theory within relaxation time approximation, show that, linear magnitude decreases with topological charge $n$. Interestingly, find that different behaviors planes for single triple Weyl semimetals. Our prediction on behavior mWSM can directly be checked experiments.