Journal
JOURNAL OF APPLIED PHYSICS
Volume 121, Issue 9, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4977581
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Funding
- National Natural Science Foundation of China [61306149, 21673296]
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Using the non-equilibrium Green's function method combined with the spin-polarized density functional theory, we calculate the electronic and transport properties of the armchair graphene nanoribbons with a special edge hydrogenation (S-AGNRs). The results show S-AGNRs are ferromagnetic bipolar magnetic semiconductors with 2lB magnetic moment, and the B or N atom doping can make S-AGNRs convert to up-spin dominated or down-spin dominated half metal. Therefore, a 100% spinfiltering effect has been realized in the corresponding devices. Furthermore, the negative differential resistance phenomenon can also be found. The B and N atoms co-doping can construct a PN junction, and the rectification ratio is as high as 10(10). Published by AIP Publishing.
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