Core level study of NbC(100) and NbN(100)

摘要

Core level photoemission studies of the (100) surface of NbC and NbN are reported. For the C 1s and N 1s levels negative surface core level shifts are identified. For the Nb 3d level a positive surface shift is determined on NbN(100) while no surface shifted level can be unambiguously identified on NbC(100). These findings are presented and discussed.