136 citations · 319 across the 9 of their papers we have counts for
8 papers · 1 filter
Exciton self-trapping in twisted hexagonal boron nitride homostructures
Sébastien Roux, Christophe Arnold, Etienne Carré +17
One of the main interests of 2D materials is their ability to be assembled with many degrees of freedom for tuning and manipulating excitonic properties. There is a need to underst…
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…
Bright luminescence from indirect and strongly bound excitons in hBN
Leonard Schue, Lorenzo Sponza, Alexandre Plaud +6
A quantitative analysis of the excitonic luminescence efficiency in hexagonal boron nitride (hBN) is carried out by cathodoluminescence in the ultraviolet range and compared with z…
Dimensionality effects on the luminescence properties of hBN
éonard Schué, Bruno Berini, Bernard Plaçais +4
Cathodoluminescence (CL) experiments at low temperature have been undertaken on various bulk and exfoliated hexagonal boron nitride (hBN) samples. Different bulk crystals grown fro…
Magnetocrystalline anisotropy energy of Fe, Fe slabs and nanoclusters: a detailed local analysis within a tight-binding model
Dongzhe Li, Alexander Smogunov, Cyrille Barreteau +2
We report tight-binding (TB) calculations of magnetocrystalline anisotropy energy (MAE) of Iron slabs and nanoclusters with a particuler focus on local analysis. After clarifying v…
Role of defect healing on the chirality of single-wall carbon nanotubes
Mamadou Diarra, Hakim Amara, Christophe Bichara +1
Although significant efforts have been directed towards a selective single wall carbon nanotube synthesis, the resulting diameter and chirality distributions are still too broad an…
Nickel assisted healing of defective graphene
Sondes Karoui, Hakim Amara, Christophe Bichara +1
The healing of graphene grown from a metallic substrate is investigated using tight-binding Monte Carlo simulations. At temperatures (ranging from 1000 to 2500 K), an isolated grap…