  In the present paper, we have investigated the role of cosmic string on spin
current and Hall electric field. Due to the background cosmic string, the
modified electric field of the system generates renormalized spin orbit
coupling, which induces a modified non-Abelian gauge field. The defect causes a
change in the AB and AC phases appearing due to the modified electromagnetic
field. In addition, for a time varying electric field we perform explicit
analytic calculations to derive the exact form of spin electric field and spin
current, which is defect parameter dependent and of oscillating type.
Furthermore, in an asymmetric crystal within the Drude model approach we
investigate the dependence of the cosmic string parameters on cosmic string
induced Hall electric field.
