  The low energy Dirac and Weyl spectra are allowed to violate the Lorentz
symmetry and thereby have a tilted energy dispersion. The tilt in the energy
dispersion induces a Hall voltage in the plane spanned by the electric field
and the tilt velocity. In the presence of a magnetic field the planar Hall
conductivity and resistivity show Shubnikov de Haas oscillations. The
oscillations in the planar Hall effect can become a fingerprint to spot the
anomalous transport in Dirac and Weyl semimetals.
