  In this work, we construct the exact propagator for Dirac fermions in
graphene-like systems immersed in external static magnetic fields with
non-trivial spatial dependence. Such field profiles are generated within a
first-order supersymmetric framework departing from much simpler (seed)
magnetic field examples. The propagator is spanned on the basis of the Ritus
eigenfunctions, corresponding to the Dirac fermion asymptotic states in the
non-trivial magnetic field background which nevertheless admits a simple
diagonal form in momentum space. This strategy enlarges the number of magnetic
field profiles in which the fermion propagator can be expressed in a
closed-form. Electric charge and current densities are found directly from the
corresponding propagator and compared against similar findings derived from
other methods.
