15 citations · 35 across the 6 of their papers we have counts for
6 papers
Wave packet scattering in porous planar semiconductor channel
D. S. Lopes, A. A. de Sousa, J. S. de Sousa +2
In this work, we investigate the dynamics of the wave packet traveling through a porous semiconductor channel, with the defects being simulated by a disordered scattering region pr…
Tunable properties of excitons in double monolayer semiconductor heterostructures
Luiz G. M. Tenório, Teldo A. S. Pereira, K. Mohseni +4
We studied the exciton properties in double layers of transition metal dichalcogenides (TMDs) with a dielectric spacer between the layers. We developed a method based on an expansi…
Electronic and valleytronic properties of crystalline boron-arsenide tuned by strain and disorder
L. Craco, S. S. Carara, E. da Silva Barboza +2
Ab initio density functional theory (DFT) and DFT plus coherent potential approximation (DFT+CPA) are employed to reveal, respectively, the effect of in-plane strain and site-diago…
Giant optical nonlinearity cancellation in quantum wells
S. Houver, A. Lebreton, T. A. S. Pereira +10
Second-order optical nonlinearities can be greatly enhanced by orders of magnitude in resonantly excited nanostructures, theoretically predicted and experimentally investigated in…
Dielectric mismatch and shallow donor impurities in GaN/HfO2 quantum wells
T. A. S. Pereira, A. A. Sousa, M. H. Degani +1
In this work we investigate electron-impurity binding energy in GaN/HfO quantum wells. The calculation considers simultaneously all energy contributions caused by the dielectri…
Interfacial confinement in core-shell nanowires due to high dielectric mismatch
A. A. Sousa, T. A. S. Pereira, A. Chaves +2
We theoretically investigate the role of the dielectric mismatch between materials on the energy levels and recombination energies of a core-shell nanowire. Our results demonstrate…