Journal
NANO LETTERS
Volume 9, Issue 1, Pages 269-272Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl8028569
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Funding
- JSPS [19740182, 19560021]
- Nanoscience Program, MEXT Japan
- ISSP, University of Tokyo
- RCCS, Okazaki National Institute
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The zigzag graphene nanoribbon (ZGNR) has an antiferromagnetic property, that is, the relative spin angle theta between the two edges is 180 degrees. By using noncollinear first-principles calculations, we find that the magnetic phase of the ZGNR can be controlled by injecting either electrons or holes: as the carrier density increases, theta continuously decreases from 180 to 0, which indicates that the net magnetization is possible. Either FET doping or chemical doping is found to be possible.
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