Fig. 3: Diagrammatic representation for the skew-scattering contribution.
From: Critical enhancement of the spin Hall effect by spin fluctuations

Filled pentagons are the interaction vertices with \({{{{\mathcal{F}}}}}_{3}\). The definitions of the other symbols or lines are the same as in Fig. 2. Adapted from Okamoto, S., Egami, T. & Nagaosa, N. Phys. Rev. Lett. 123, 196603 (2019).