Hofstadter butterflies of bilayer graphene

URN zum Zitieren dieses Dokuments:: urn:nbn:de:bvb:355-epub-18968
DOI zum Zitieren dieses Dokuments:: 10.5283/epub.1896

Nemec, Norbert ; Cuniberti, Gianaurelio

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Veröffentlichungsdatum dieses Volltextes: 05 Aug 2009 13:34

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We calculate the electronic spectrum of bilayer graphene in perpendicular magnetic fields non-perturbatively. To accomodate arbitrary displacements between the two layers, we apply a periodic gauge based on singular flux vortices of phase $2\\pi$. The resulting Hofstadter-like butterfly plots show a reduced symmetry, depending on the relative position of the two layers against each other. The ...