Electronic band structure of magnetic bilayer graphene superlattices
نویسندگان
چکیده
منابع مشابه
The low energy electronic band structure of bilayer graphene
We employ the tight binding model to describe the electronic band structure of bilayer graphene and we explain how the optical absorption coefficient of a bilayer is influenced by the presence and dispersion of the electronic bands, in contrast to the featureless absorption coefficient of monolayer graphene. We show that the effective low energy Hamiltonian is dominated by chiral quasiparticles...
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A tight binding model is used to calculate the band structure of bilayer graphene in the presence of a potential difference between the layers that opens a gap ∆ between the conduction and valence bands. In particular, a self consistent Hartree approximation is used to describe imperfect screening of an external gate, employed primarily to control the density n of electrons on the bilayer, resu...
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Bilayer graphene is an intriguing material in that its electronic structure can be altered by changing the stacking order or the relative twist angle, yielding a new class of low-dimensional carbon system. Twisted bilayer graphene can be obtained by (i) thermal decomposition of SiC; (ii) chemical vapor deposition (CVD) on metal catalysts; (iii) folding graphene; or (iv) stacking graphene layers...
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ژورنال
عنوان ژورنال: Journal of Applied Physics
سال: 2014
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.4896530