  The recently-proposed coupling between the angular momentum density and
magnetic moment [A. Raeliarijaona et al, Phys. Rev. Lett. 110, 137205 (2013)]
is shown here to result in the prediction of (i) novel spin currents generated
by an electrical current and (ii) new electrical currents induced by a spin
current in systems possessing specific interfaces between two different
materials. Some of these spin (electrical) currents can be reversed near the
interface by reversing the applied electrical (spin) current. Similarities and
differences between these novel spintronic effects and the well-known spin Hall
and inverse spin Hall effects are also discussed.
