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Ab initio spin-flip conductance of hydrogenated graphene nanoribbons: Spin-orbit interaction and scattering with local impurity spins

Wilhelm, Jan ; Walz, Michael ; Evers, Ferdinand


We calculate the spin-dependent zero-bias conductance Gσσ′ in armchair graphene nanoribbons with hydrogen adsorbates employing a DFT-based ab initio transport formalism including spin-orbit interaction. We find that the spin-flip conductance Gσ¯σ can reach the same order of magnitude as the spin-conserving one Gσσ, due to exchange-mediated spin scattering. In contrast, the genuine spin-orbit interaction appears to play a secondary role, only.

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