Figure 4

Relationship between effective Rashba parameter and work function difference. (a) Absolute value \(|{{\alpha }_{{\rm{R}}}}^{{\rm{eff}}}|\) in various NM/Bi₂O₃ interfaces as a function of |ΔΦ_NM-Bi2O3| between NM and Bi₂O₃. (b) \({{\alpha }_{{\rm{R}}}}^{{\rm{eff}}}\) as a function of ΔΦ_NM-Bi2O3 between NM and Bi₂O₃.