182 citations · 1.2k across the 36 of their papers we have counts for
36 papers
Signatures of sub-band excitons in few-layer black phosphorus
A. Chaves, G. O. Sousa, K. Khaliji +3
Recent experimental measurements of light absorption in few-layer black phosphorus (BP) reveal a series of high and sharp peaks, interspersed by pairs of lower and broader features…
Stark shift of excitons and trions in two-dimensional materials
L. S. R. Cavalcante, D. R. da Costa, G. A. Farias +2
The effect of an external in-plane electric field on neutral and charged exciton states in two-dimensional (2D) materials is theoretically investigated. These states are argued to…
Hybrid plasmon-magnon polaritons in graphene-antiferromagnet heterostructures
Y. V. Bludov, J. N. Gomes, G. A. Farias +3
We consider a hybrid structure formed by graphene and an insulating antiferromagnet, separated by a dielectric of thickness up to . When uncoupled, both graphene…
Conditions for the occurrence of Coulomb blockade in phosphorene quantum dots at room temperature
H. A. Melo, M. A. Lino, D. R. da Costa +4
We study the addition energy spectra of phosphorene quantum dots focusing on the role of dot size, edges passivation, number of layers and dielectric constant of the substrate wher…
Localized surface plasmons in a continuous and flat graphene sheet
André J. Chaves, Diego R. Costa, Gil A. Farias +1
We derive an integral equation describing surface-plasmon polaritons in graphene deposited on a substrate with a planar surface and a dielectric protrusion in the opposite surface…
Excitonic gaps and exciton binding energies in multilayer phosphorene quantum dots
M. A. Lino, J. S. de Sousa, D. R. da Costa +3
Dielectric screening is greatly important to an accurate calculation of the exciton binding energies in two-dimensional materials. In this work, we calculate the dielectric functio…