Figure 3.

An electron scattering on a three non-coplanar spins. The illustration is given for spin-conserving (spin-up) scattering channel and shows the interference between spin-conserving scattering on scatterer 1 with magnetization direction ${\mathit{n}}_1$ and double spin-flip process on scatterers 2,3 with ${\mathit{n}}_{2,3}$. The asymmetry of scattering cross section arises from nonzero spin chirality ${\mathit{n}}_1\cdot [{\mathit{n}}_2\times {\mathit{n}}_3]\ne 0$.