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Dynamical gap generation in graphene nanoribbons: An effective relativistic field theoretical model
A. J. Chaves, G. D. Lima, W. de Paula +4
We show that the assumption of a nontrivial zero band gap for a graphene sheet within an effective relativistic field theoretical model description of interacting Dirac electrons o…
(Giant) Vortex - (anti) vortex interaction in bulk superconductors: The Ginzburg-Landau theory
Andrey Chaves, F. M. Peeters, G. A. Farias +1
The vortex-vortex interaction potential in bulk superconductors is calculated within the Ginzburg-Landau (GL) theory and is obtained from a numerical solution of a set of two coupl…
Topological confinement in graphene bilayer quantum rings
L. J. P. Xavier, J. M. Pereira, Andrey Chaves +2
We demonstrate the existence of localized electron and hole states in a ring-shaped potential kink in biased bilayer graphene. Within the continuum description, we show that for sh…
Simplified model for the energy levels of quantum rings in single layer and bilayer graphene
M. Zarenia, J. Milton Pereira, A. Chaves +2
Within a minimal model, we present analytical expressions for the eigenstates and eigenvalues of carriers confined in quantum rings in monolayer and bilayer graphene. The calculati…