▎ 摘　　要

By angle- and spin-resolved photoemission we have studied electronic structure and spin-orbit splitting in graphene/Ni(111) intercalated with alloy of high spin-orbit materials Bi and Au. Results are compared to ultimate cases of (i) graphene/Ni intercalated only with Au which shows giant Rashba splitting (similar to 100 meV) and (ii) graphene/Ni intercalated only with Bi for which spin splitting of the Dirac cone is nearly zero (