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Spin electronic structure of graphene pi-states and Pt 5d-states for theGraphene/Pt interface has been investigated. Here, we report a large inducedspin-orbit splitting (~70-100 meV) of graphene pi-states with formation ofnon-degenerated Dirac-cone spin states at the K-point of the BZ crossed withspin-polarized Pt 5d-states at Fermi level that opens up a possibility forcreation of new spintronics devices. We propose to use this spin structure forformation of spin current with spin locked perpendicular to the momentum forinduced remagnetization of the (Ni-Fe)-nanodots arranged atop the interface.Theoretical estimations of the spin current created at the Graphene/Ptinterface and the induced intrinsic effective magnetic field leading to thein-plane remagnetization of the NiFe-nanodots due to spin-orbit torque effectare presented. By micromagnetic modeling based on experimentally observedspin-orbit splitting we demonstarte that the induced intrinsic magnetic fieldmight be effectively used for magnetization swithching of the deposited(Ni-Fe)-nanodots.

Spin structure of Graphene/Pt interface for spin current formation and induced magnetization in deposited (Ni-Fe)-nanodots