Spin-polarized transport through heterobilayers of graphene nanoribbons and ruthenium-porphyrin tapes

► We investigate the quantum conductance of the bilayer involving graphene nanoribbon. ► The systems consists of armchair graphene nanoribbon and ruthenium porphyrin tape (Ru-PPT). ► The bilayer involving the triply-linked Ru-PPT is a quasi-metal. ► The bilayer involving the doubly-linked Ru-PPT is a half-metal.