  In materials lacking inversion symmetry, the spin-orbit coupling enables the
direct connection between the electron's spin and its linear momentum, a
phenomenon called inverse spin galvanic effect. In magnetic materials, this
effect promotes current-driven torques that can be used to control the
magnetization direction electrically. In this work, we investigate the
current-driven inverse spin galvanic effect in a quantum well consisting in a
magnetic material embedded between dissimilar insulators. Assuming the presence
of Rashba spin-orbit coupling at the interfaces, we investigate the nature of
the non-equilibrium spin density and the influence of the quantum well
parameters. We find that the torque is governed by the interplay between the
number of states participating to the transport and their spin chirality, the
penetration of the wave function into the tunnel barriers, and the strength of
the Rashba term.
