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Tunable nonlinear excitonic optical response in biased bilayer graphene
M. F. C. Martins Quintela, N. M. R. Peres, T. Garm Pedersen
Biased bilayer graphene (BBG) is an important system for studies of excitonic effects in graphene--based systems, with its easily tunable bandgap. This bandgap is governed by an ex…
Topology in a one-dimensional plasmonic crystal
D. A. Miranda, Y. V. Bludov, N. Asger Mortensen +1
In this paper we study the topology of the bands of a plasmonic crystal composed of graphene and of a metallic grating. Firstly, we derive a Kronig-Penney type of equation for the…
Valley-selective confinement of excitons in transition metal dichalcogenides with inhomogeneous magnetic fields
A. J. Chaves, D. R. da Costa, F. M. Peeters +1
Magnetized ferromagnetic disks or wires support strong inhomogeneous fields in their borders. Such magnetic fields create an effective potential, due to Zeeman and diamagnetic cont…
Hyperbolic phonon-plasmon polaritons in a hBN-graphene van der Waals structure
Yu. V. Bludov, D. A. Bahamon, N. M. R. Peres +1
In this paper a thorough theoretical study of a new class of collective excitations, dubbed hyperbolic surface phonon plasmon polaritons, is performed. This new type of light-matte…
Coexistence of 1D and 2D topology and genesis of Dirac cones in the chiral Aubry-André model
Tiago V C Antão, Daniel A Miranda, Nuno M R Peres
We construct a one-dimensional (1D) topological SSH-like model with chiral symmetry and a superimposed hopping modulation, which we call the chiral Aubry-André model. We show that…