The graphene Au Ni interface and its application in the construction of a graphene spin filter

A modification of the contact of graphene with ferromagnetic electrodes in a model of the graphene spin filter allowing restoration of the graphene electronic structure is proposed. It is suggested for this aim to intercalate into the interface between the graphene and the ferromagnetic Ni or Co electrode a Au monolayer to block the strong interaction between the graphene and Ni Co and, thus, prevent destruction of the graphene electronic structure which evolves in direct contact of graphene with Ni Co . It is also suggested to insert an additional buffer graphene monolayer with the size limited by that of the electrode between the main graphene sheet providing spin current transport and the Au Ni electrode injecting the spin current. This will prevent the spin transport properties of graphene from influencing contact phenomena and eliminate pinning of the graphene electronic structure relative to the Fermi level of the metal, thus ensuring efficient outflow of injected electrons into the graphene. The role of the spin structure of the graphene Au Ni interface with enhanced spin orbit splitting of graphene amp; 960; states is also discussed, and its use is proposed for additional spin selection in the process of the electron excitatio