Figure 4
From: Hidden orbital polarization in diamond, silicon, germanium, gallium arsenide and layered materials

(a, b) The electronic band structures of WSe2 obtained by setting the interlayer coupling to zero (a) or the atomic SOC (b) to zero. (c) The hidden polarizations along z of the lower layer of the highest-energy valence bands at K versus atomic SOC. The fully polarized values are
and
. The vertical dash-dotted line shows the physical value of the atomic spin–orbit coupling of W atoms. (d) The same quantity as in (d), but with the interlayer distance reduced to 85% of the actual value.