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Polaritons in layered 2D materials
Tony Low, Andrey Chaves, Joshua D. Caldwell +7
In recent years, enhanced light-matter interactions through a plethora of dipole-type polaritonic excitations have been observed in two-dimensional (2D) layered materials. In graph…
Pumping electrons in graphene to the -point in the Brillouin zone: The emergence of anisotropic plasmons
A. J. Chaves, N. M. R. Peres, Tony Low
We consider the existence of plasmons in a non-equilibrium situation where electrons from the valence band of graphene are pumped to states in the Brillouin zone around the $\mathb…
Theoretical investigation of electron-hole complexes in anisotropic two-dimensional materials
Andrey Chaves, M. Z. Mayers, F. M. Peeters +1
Trions and biexcitons in anisotropic two-dimensional materials are investigated within an effective mass theory. Explicit results are obtained for phosphorene and arsenene, materia…
The split-operator technique for the study of spinorial wavepacket dynamics
Andrey Chaves, G. A. Farias, F. M. Peeters +1
The split-operator technique for wave packet propagation in quantum systems is expanded here to the case of propagating wave functions describing Schrödinger particles, namely, cha…
Energy shift and conduction-to-valence band transition mediated by a time dependent potential barrier in graphene
Andrey Chaves, D. R. da Costa, G. O. de Sousa +2
We investigate the scattering of a wave packet describing low-energy electrons in graphene by a time-dependent finite step potential barrier. Our results demonstrate that, after Kl…