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Supercritical Coulomb Impurities in Gapped Graphene
Vitor M. Pereira, Valeri N. Kotov, A. H. Castro Neto
We study the problem of Coulomb field-induced charging of the ground state in a system of 2D massive Dirac particles (gapped graphene). As in its 3D QED counterpart, the critical C…
Electronic properties of bilayer and multilayer graphene
Johan Nilsson, A. H. Castro Neto, F. Guinea +1
We study the effects of site dilution disorder on the electronic properties in graphene multilayers, in particular the bilayer and the infinite stack. The simplicity of the model a…
Surface dissipation in nanoelectromechanical systems: Unified description with the standard tunneling model and effects of metallic electrodes
C. Seoanez, F. Guinea, A. H. Castro Neto
By modifying and extending recent ideas [C. Seoanez et al., Europhys. Lett. 78, 60002 (2007)], a theoretical framework to describe dissipation processes in the surfaces of vibratin…
Localized states at zigzag edges of bilayer graphene
Eduardo V. Castro, N. M. R. Peres, J. M. B. Lopes dos Santos +2
We report the existence of zero energy surface states localized at zigzag edges of bilayer graphene. Working within the tight-binding approximation we derive the analytic solution…
Making graphene visible
P. Blake, K. S. Novoselov, A. H. Castro Neto +5
Microfabrication of graphene devices used in many experimental studies currently relies on the fact that graphene crystallites can be visualized using optical microscopy if prepare…