Step conductance and spin selectivity in a one dimensional tailored conical magnet

Using an S-matrix formulation we evaluate the conductance of a one dimensional free electron gas in double exchange interaction with a conical magnet. We find integer conductance steps depending on the energy window of the incoming electrons for conical magnets in different orientations and a modulated magnetic field profile. The conductance windows, that we attribute to potential or diffractive scattering, are characterized by spin selectivity depending on the magnetic field direction and chirality.