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|Title:||Strong spin-dependent negative differential resistance in composite graphene superlattices|
|Source:||Munárriz, J., Gaul, C., Malyshev, A.V., Orellana, P.A., Müller, C.A., Domínguez-Adame, F. (2013-10-17). Strong spin-dependent negative differential resistance in composite graphene superlattices. Physical Review B - Condensed Matter and Materials Physics 88 (15) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.88.155423|
|Abstract:||We find clear signatures of spin-dependent negative differential resistance in compound systems comprising a graphene nanoribbon and a set of ferromagnetic insulator strips deposited on top of it. The periodic array of ferromagnetic strips induces a proximity exchange splitting of the electronic states in graphene, resulting in the appearance of a superlattice with a spin-dependent energy spectrum. The electric current through the device can be highly polarized and both the current and its polarization manifest nonmonotonic dependence on the bias voltage. The device operates therefore as an Esaki spin diode, which opens possibilities to design new spintronic circuits. © 2013 American Physical Society.|
|Source Title:||Physical Review B - Condensed Matter and Materials Physics|
|Appears in Collections:||Staff Publications|
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