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Scattering of graphene plasmons at abrupt interfaces: an analytic and numeric study
A. J. Chaves, B. Amorim, Yu. V. Bludov +2
We discuss the scattering of graphene surface plasmon-polaritons (SPPs) at an interface between two semi-infinite graphene sheets with different doping levels and/or different unde…
Determination of layer-dependent exciton binding energies in few-layer black phosphorus
Guowei Zhang, Andrey Chaves, Shenyang Huang +4
The attraction between electrons and holes in semiconductors forms excitons, which largely determine the optical properties of the hosting material, and hence the device performanc…
Theoretical overview of black phosphorus
Andrey Chaves, W. Ji, J. Maassen +2
We review the basic optical, electronic, optoelectronic, thermoelectric and mechanical properties of few-layer black phosphorus (BP), a layered semiconductor that can be exfoliated…
Electrical control of inter-layer excitons in van der Waals heterostructures
A. Chaves, J. G. Azadani, V. Ongun Özçelik +2
We investigate excitons in stacked transition metal dichalcogenide (TMDC) layers under perpendicularly applied electric field, herein MoSe/WSe van der Waals heterostructure…
A hydrodynamic model approach to the formation of plasmonic wakes in graphene
A. J. Chaves, N. M. R. Peres, G. Smirnov +1
Using the hydrodynamic model in the electrostatic approximation, we describe the formation of graphene surface plasmons when a charge is in motion either perpendicular or parallel…
Excitonic effects in the optical properties of 2D materials: An equation of motion approach
A. J. Chaves, R. M. Ribeiro, T. Frederico +1
We present a unified description of the excitonic properties of four monolayer transition-metal dichalcogenides (TMDC's) using an equation of motion method for deriving the Bethe-S…