FIG. 7.

Fermi energy dependence of interband responses (per unit cell) of the spin current influx $\Phi \left[Q_z^{S_y}\right]$ (light blue solid line), spin-orbital torque $T_{\text{SO}}^{S_y}$ (dark red solid line), and exchange torque $T_{\text{XC}}^{S_y}$ (orange solid line), which are summed over the Fe layers in Fe/W(110). (a) The result when spin-orbit coupling is on in W and off in Fe, and (b) the result when spin-orbit coupling is off in W and on in Fe.