157 citations · 1k across the 26 of their papers we have counts for
4 papers · 2 filters
Direct and indirect excitons in boron nitride polymorphs: a story of atomic configuration and electronic correlation
Lorenzo Sponza, Hakim Amara, Claudio Attaccalite +5
We compute and discuss the electronic band structure and excitonic dispersion of hexagonal boron nitride (hBN) in the single layer configuration and in three bulk polymorphs (usual…
Two-photon absorption in two-dimensional materials: The case of hexagonal boron nitride
Claudio Attaccalite, Myrta Grüning, Hakim Amara +2
We calculate the two-photon absorption in bulk and single layer hexagonal boron nitride (hBN) both by an ab-initio real-time Bethe-Salpeter approach and by a the real-space solutio…
Excitons in few-layer hexagonal boron nitride: Davydov splitting and surface localization
Fulvio Paleari, Thomas Galvani, Hakim Amara +3
Hexagonal boron nitride (hBN) has been attracting great attention because of its strong excitonic effects. Taking into account few-layer systems, we investigate theoretically the e…
Entropy driven stability of chiral single-walled carbon nanotubes
Yann Magnin, Hakim Amara, François Ducastelle +2
Single-walled carbon nanotubes are hollow cylinders, that can grow centimeters long by carbon incorporation at the interface with a catalyst. They display semi-conducting or metall…