Models of Strong Interaction in Flat-Band Graphene Nanoribbons: Magnetic Quantum Crystals
arXiv:1108.0088 · doi:10.1103/PhysRevB.85.075438
Abstract
Graphene based nanostructures exhibit flat electronic energy bands in their single-particle spectrum. We consider interacting electrons in flat bands of zig-zag 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.
9 pages, 6 figures, 4 tables
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Cited by in corpus (7)
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- Effects of interedge scattering on the Wigner crystallization in graphene nanoribbons
- Fractionalized Spin Excitations in the Edge Ferromagnetic State of Graphene: Signature of the Ferromagnetic Luttinger Liquid
- Wigner crystallization at graphene edges
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