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14 p, 2.3 MB Velocity renormalization and Dirac cone multiplication ind graphene superlattices with various barrier-edge geometries / De Jamblinne de Meux, Albert (Université Catholique de Louvain. Institute of Condensed Matter and Nanosciences) ; Leconte, Nicolas (Institut Català de Nanociència i Nanotecnologia) ; Charlier, Jean Christophe (Université Catholique de Louvain. Institute of Condensed Matter and Nanosciences) ; Lherbier, Aurélien (Université Catholique de Louvain. Institute of Condensed Matter and Nanosciences)
The electronic properties of one-dimensional graphene superlattices strongly depend on the atomic size and orientation of the 1D external periodic potential. Using a tight-binding approach, we show that the armchair and zigzag directions in these superlattices have a different impact on the renormalization of the anisotropic velocity of the charge carriers. [...]
2015 - 10.1103/PhysRevB.91.235139
Physical Review B, Vol. 91, issue 23 (2015) , art. 235139  

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