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Ferromagnetism without flat bands in thin armchair nanoribbons
- Source :
- Eur. Phys. Jour. B75, 511, (2010)
- Publication Year :
- 2010
-
Abstract
- Describing by a Hubbard type of model a thin armchair graphene ribbon in the armchair hexagon chain limit, one shows in exact terms, that even if the system does not have flat bands at all, at low concentration a mesoscopic sample can have ferromagnetic ground state, being metallic in the same time. The mechanism is connected to a common effect of correlations and confinement.<br />Comment: 37 pages, 12 figures, in press at Eur. Phys. Jour. B
Details
- Database :
- arXiv
- Journal :
- Eur. Phys. Jour. B75, 511, (2010)
- Publication Type :
- Report
- Accession number :
- edsarx.1005.2126
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1140/epjb/e2010-00160-0