▎ 摘　　要

Based on the first-principles density functional theory combined with the nonequilibrium Green's function methodology, we have designed and investigated the spin-polarized transport properties of an all-carbon mo-lecular device, in which a C60 fullerene is sandwiched between two ferromagnetic zigzag-edge graphene nano-ribbon electrodes. The results show that the spin-polarized properties are strongly dependent on the external magnetic field modulation and spin-filtering, giant magnetoresistance and spin-rectifying effects are realized in this device. The mechanisms are proposed for these interesting phenomena. These results demonstrate that the designed all-carbon device holds great potentials in the development of multifunctional molecular spintronic device.