Models of strong interaction in flat-band graphene nanoribbons: Magnetic quantum crystals. Wang, H. & Scarola, V., W. Physical Review B, 85(7):75438, 2012.
Models of strong interaction in flat-band graphene nanoribbons: Magnetic quantum crystals [pdf]Paper  Models of strong interaction in flat-band graphene nanoribbons: Magnetic quantum crystals [link]Website  doi  abstract   bibtex   
Graphene-based nanostructures exhibit flat electronic energy bands in their single-particle spectrum. We consider interacting electrons in flat bands of zigzag nanoribbons. We present a protocol for flat-band projection that yields interaction-only tight-binding models. We argue that, at low densities, flat bands can delocalize single-particle basis states to support ferromagnetic quantum crystal ground states. © 2012 American Physical Society.

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