7 papers
Engineering Excitons through Polymorphism and Dimensional Confinement in Low-Dimensional Tellurium
Gabriel Elyas Gama Araujo, Alexandre Cavalheiro Dias, Andreia Luisa da Rosa
The interplay between dimensionality, band-edge electronic structure, and electron-hole interactions governs the optical response of low-dimensional tellurium, yet the microscopic…
Chemical Control of Electronic Structure and Topology in Tellurium-Encapsulated Silicene
Gabriel Elyas Gama Araujo, Andre Luis de Oliveira Batista, Willian Oliveira Santos +3
We investigate chemical control of the electronic, optical, and topological properties of two-dimensional \ce{Si2X2Te2} (\ce{X} = \ce{B}, \ce{Al}, \ce{Ga}, and \ce{In}) monolayers…
Beyond Disinformation: Strategic Misrepresentation across Content, Actors, Processes, and Covertness
Arttu Malkamäki, Daniel Balinhas, Letizia Iannucci +8
This article revisits the widely studied problem of disinformation and related phenomena in online social networks (OSNs) by reframing it as a broader problem of misrepresentation.…
Flat bands in ultra-wide gap two-dimensional germanium dioxide
Rafael Franco Ribeiro Reis, Gabriel Elyas Gama Araujo, Danilo Kuritza +3
We employ first principles density-functional theory (DFT) and the Bethe-Salpeter equation (BSE) in the framework of tight-binding based maximally localized Wannier functions (MLWF…
Electronic and optical and topological properties of defects in bismuthene
Gabriel Elyas Gama Araujo, Andreia Luisa da Rosa, Alexandre Cavalheiro Dias +1
In this work we use first principles density-functional theory and Bethe-Salpeter equation together with tight-binding based maximally localized wannier functions (MLWF-TB) to inve…
Electronic and optical properties of two-dimensional flat band triphosphides
Gabriel Elyas Gama Araujo, Lucca Moraes Gomes, Dominike Pacine de Andrade Deus +2
In this work we use first-principles density-functional theory (DFT) calculations combined with the maximally localized Wannier function tight binding Hamiltonian (MLWF-TB) and Bet…
Signature of excitonic insulators in phosphorene nanoribbons
A. F. P. de Oliveira, A. L. da Rosa, A. C. Dias
Phosphorene is a recently developed two-dimensional (2D) material that has attracted tremendous attention because of its unique anisotropic optical properties and quasi-one-dimensi…