From the 1 of 5 linked papers with an AI index.
5 papers
Binding and spontaneous condensation of excitons in narrow-gap carbon nanotubes
Giacomo Sesti, Daniele Varsano, Elisa Molinari +1
The paper theoretically demonstrates that all narrow‑gap carbon nanotubes become excitonic insulators, deriving how exciton binding energy scales with tube radius and chirality and…
Stabilization of sliding ferroelectricity through exciton condensation
Matteo D'Alessio, Daniele Varsano, Elisa Molinari +1
Sliding ferroelectricity is a phenomenon that arises from the insurgence of spontaneous electronic polarization perpendicular to the layers of two-dimensional (2D) systems upon the…
Efficient GW calculations for metals from an accurate ab initio polarizability
Giacomo Sesti, Alberto Guandalini, Andrea Ferretti +4
Despite its success in the study of spectroscopic properties, the method presents specific methodological challenges when applied to systems with metallic screening. Here, we…
Influence of Interlayer Stacking on Optical Behavior in WSe/MoS van der Waals Heterostructures
Widad Louafi, Karim Rezouali, Daniele Varsano +3
We investigate the impact of crystal alignment on excitonic behavior in WSe/MoS van der Waals heterostructures by comparing eclipsed (AA) and staggered (AB) stacking co…
Excitonic effects in energy loss spectra of freestanding graphene
Alberto Guandalini, Ryosuke Senga, Yung-Chang Lin +8
In this work we perform electron energy-loss spectroscopy (EELS) of freestanding graphene with high energy and momentum resolution to disentangle the quasielastic scattering from t…