Abstract
We study the positive longitudinal magnetoconductivity (LMC) and planar Hall effect as emergent effects of the chiral anomaly in Weyl semimetals, following a recent-developed theory by integrating the Landau quantization with Boltzmann equation. It is found that, in the weak magnetic field regime, the LMC and planar Hall conductivity (PHC) obey cos⁶θ and cos⁵θsin θ dependences on the angle θ between the magnetic and electric fields. For higher magnetic fields, the LMC and PHC cross over to cos²θ and cosθsinθ dependences, respectively. Interestingly, the PHC could exhibit quantum oscillations with varying θ, due to the periodic-in-1/B oscillations of the chiral chemical potential. When the magnetic and electric fields are noncollinear, the LMC and PHC will deviate from the classical B-quadratic dependence, even in the weak magnetic field regime.