Wigner crystallization in a single and bilayer graphene

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We study the possibility of Wigner crystallization in both single- and and bi-layer graphene using a real space tight binding model. In addition to verifying our earlier prediction for single layer graphene, we predict that the bilayer graphene can undergo a Wigner crystal transition at low enough carrier density thus offering a possibility of tunable and bipolar Wigner crystal. We find that aside from the Coulomb interaction of the carriers of two layers that stabilizes the charge ordered state, so does the inter layer coupling.
5 pages, latex file, 4 ps figure files

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Strongly Correlated Electrons, Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/130229

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0706.1689
 http://arxiv.org/abs/0706.1689

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arXiv