Nonlinear interaction of spin and charge currents in graphene

B. J. van Wees; I. J. Vera-Marun; V. Ranjan

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Nonlinear interaction of spin and charge currents in graphene

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arxiv 1104.4743 v2 pith:EOJ62I3H submitted 2011-04-25 cond-mat.mes-hall

I. J. Vera-Marun , V. Ranjan , B. J. van Wees This is my paper · ORCID

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keywords spinchargecurrentsgraphenecontactsinteractionnonlinearnonmagnetic

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We describe a nonlinear interaction between charge currents and spin currents which arises from the energy dependence of the conductivity. This allows nonmagnetic contacts to be used for measuring and controlling spin signals. We choose graphene as a model system to study these effects and predict its magnitudes in nonlocal spin valve devices. The ambipolar behavior of graphene is used to demonstrate amplification of spin accumulation in p-n junctions by applying a charge current through nonmagnetic contacts.

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