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Spin Filter Properties of Armchair Graphene Nanoribbons With Substitutional Fe Atoms

The spin filter capability of a (0,8) armchair graphene nanoribbon with Fe atoms at substitutional sites is investigated by density functional theory in combination with the non-equilibrium Green's function technique. For specific arrangements, a high degree of spin polarisation is achieved. These include a single substitution at an edge position or double substitution in the central sector of the transmission element. The possibility of switching between majority and minority spin polarisation by changing the double substitution geometry is predicted. Including the bias dependence of the transmission function proves to be essential for correct representation of the spin-resolved current-voltage profiles.

Identiferoai:union.ndltd.org:ETSU/oai:dc.etsu.edu:etsu-works-11821
Date17 September 2017
CreatorsHagelberg, Frank, Kaiser, Alexander, Sukuba, Ivan, Probst, Michael
PublisherDigital Commons @ East Tennessee State University
Source SetsEast Tennessee State University
Detected LanguageEnglish
Typetext
SourceETSU Faculty Works

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