Effect of a transverse electric field on the Landau bands in a Weyl semimetal

详细

The Landau bands in crossed magnetic and electric fields are studied for the case of a Weyl semimetal. The expression for the energy spectrum of such a system is obtained using an approach based on the Lorentz shift. It is shown that the electric field leads to a substantial transformation of the Landau bands. At the electric field equal to v_FH/c, the collapse of the Landau levels occurs and the motion becomes completely linear. Under this condition, the wavefunction is nonzero only for the states with p_z = 0. This significantly affects the phenomena related to the unusual surface states, which are characteristic of such materials.