Phase control of graphene nanoribbon by carrier doping: appearance of noncollinear magnetism.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 19099501.
- Also identified by DOI 10.1021/nl8028569.
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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.
Medical subject headings
- Crystallization
- Graphite
- Models, Chemical
- Models, Molecular
- Nanostructures
- Nanotechnology