54 citations · 304 across the 15 of their papers we have counts for
7 papers · 1 filter
Explaining the x-ray nonlinear susceptibility of diamond and silicon near absorption edges
B. Barbiellini, Y. Joly, Kenji Tamasaku
We report the observation and the theoretical explanation of the parametric down-conversion nonlinear susceptibility at the -absorption edge of diamond and at the -absor…
Gradient correction scheme for bulk and defect positron states in materials: New developments
J. Kuriplach, B. Barbiellini
As local density approximation positron calculations systematically underestimate positron lifetimes when they are compared with their experimental counterparts, the generalized gr…
Inelastic X-ray scattering from valence electrons near absorption edges of FeTe and TiSe
B. Barbiellini, J. N. Hancock, C. Monney +4
We study resonant inelastic x-ray scattering (RIXS) peaks corresponding to low energy particle-hole excited states of metallic FeTe and semi-metallic TiSe for photon incident e…
The Positronium state in quartz
B. Barbiellini, P. M. Platzman
The positronium state in quartz is described by a linear superposition of two states: the first describing the free positron in the crystal and the second corresponding to a positr…
How the hydrogen bond in NHF is revealed with Compton scattering
B. Barbiellini, Ch. Bellin, G. Loupias +2
In order to probe electron wave functions involved in the bonding of NHF, we have performed Compton scattering experiments in an oriented single crystal and in a powder. Ab ini…
Positron studies of surfaces, structure and electronic properties of nanocrystals
S. W. H. Eijt, B. Barbiellini, A. J. Houtepen +3
A brief review is given of recent positron studies of metal and semiconductor nanocrystals. The prospects offered by positron annihilation as a sensitive method to access nanocryst…
Ab initio calculations of the hydrogen bond
B. Barbiellini, A. Shukla
Recent x-ray Compton scattering experiments in ice have provided useful information about the quantum nature of the interaction between HO monomers. The hydrogen bond is charac…