Suppression of magneto-optical transport in tilted Weyl semimetals by orbital magnetic moment

By incorporating the orbital magnetic moment, we investigate the magneto-optical transport of Weyl semimetals within a semiclassical approximation. In the linear or nonlinear response regime, an analytic expression for the magnetoconductivity is obtained, where a new term due to the orbital magnetic moment is added, and leads to a partial cancellation for the total magnetoconductivities. This suppressed feature is further manifested by analyzing the linear and quadratic contribution in the magnetic field to magnetoconductivities. This result may be used to explain the deviation between the recent theory and experiment.