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    Models of strong interaction in flat-band graphene nanoribbons: Magnetic quantum crystals

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    Downloads: 278
    Date
    2012-02-29
    Author
    Wang, H.
    Scarola, Vito W.
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    Abstract
    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.
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    http://hdl.handle.net/10919/25394
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    • Scholarly Works, Department of Physics [811]

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