Virginia TechWang, H.Scarola, Vito W.2014-02-112014-02-112012-02-29Wang, Hao ; Scarola, V. W., Feb 29, 2012. "Models of strong interaction in flat-band graphene nanoribbons: Magnetic quantum crystals," PHYSICAL REVIEW B 85(7): 075438. DOI: 10.1103/PhysRevB.85.0754381098-0121http://hdl.handle.net/10919/25394Graphene-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.en-USIn Copyrightwannier functionspoint-defectsferromagnetismedgestatePhysicsArticle - Refereedhttp://link.aps.org/doi/10.1103/PhysRevB.85.075438https://doi.org/10.1103/PhysRevB.85.075438