Fig. 5: Comparison of ξ_DL and spin Hall conductance (σ_SH) for some representative spin current source materials^{13,14,26,51,52,53,54,55,56,57,58,59}.

Error bars denote experimental uncertainties. Variations may stem from measurement techniques (e.g., harmonic Hall or spin torque ferromagnetic resonance), interfacial conditions, or theoretical approximations.