▎ 摘　　要

We investigated the possibility of the optical generation of a spin-dependent current, induced by the edge magnetism, in a graphene nanoribbon junction. The results show that the ferromagnetic state at zigzag edges, even in a small part of the junction, can produce an acceptable quantum efficiency as well as a high optical spin-filtering ratio in the visible region under a linear light irradiation. Moreover, the spin-photovoltaic behavior of the proposed nanodevice is rather robust to the changes in the geometrical parameters of the structure. Our scheme can pave the way towards more feasible designs of graphene-based spin-photovoltaic devices operating at room temperature.