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Phase Control of Graphene Nanoribbon by Carrier Doping: Appearance of Noncollinear Magnetism
Nano Letters2008Vol. 9(1), pp. 269–272
Citations Over TimeTop 10% of 2008 papers
Abstract
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 degrees , which indicates that the net magnetization is possible. Either FET doping or chemical doping is found to be possible.
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