Materials design of half-metallic graphene and graphene nanoribbons

Menghao Wu; Xiaojun Wu; Yi Gao; Zeng, X. C.
June 2009
Applied Physics Letters;6/1/2009, Vol. 94 Issue 22, p223111
Academic Journal
Through patterned chemical modification, we show that both graphene sheets and zigzag-edged graphene nanoribbons (ZGNRs) can be converted to half-metals as long as the unmodified carbon strip (or width of ZGNRs) is sufficiently wide. Periodically functionalized graphene can mimic electronic behavior of edge-modified ZGNRs as the edge-modified zigzag carbon chains effectively divide a graphene sheet into a series of identical ZGNRs.


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