194 citations · 374 across the 8 of their papers we have counts for
8 papers
Pseudospin-phonon pretransitional dynamics in lead halide hybrid perovskites
B. Hehlen, P. Bourges, B. Rufflé +9
The low frequency lattice vibrations and relaxations are investigated in single crystals of the four 3D hybrid organolead perovskites, MAPbBr, FAPbBr, MAPbI, and -FA…
Low-frequency vibrational spectroscopy of glasses
Benoit Rufflé, Marie Foret, Bernard Hehlen
Atomic vibrations in perfect, slightly defective or mixed crystals are to a large extent well understood since many decades. Theoretical descriptions are thus in excellent agreemen…
Direct evidence of weakly dispersed and strongly anharmonic optical phonons in hybrid perovskites
A. C. Ferreira, S. Paofai, A. Létoublon +8
Hybrid organolead perovskites (HOP) have started to establish themselves in the field of photovoltaics, mainly due to their great optoelectronic properties and steadily improving s…
Atomic Vibrations in Glasses
B. Hehlen, B. Rufflé
In glasses, atomic disorder combined with atomic connectivity makes understanding of the nature of the vibrations much more complex than in crystals or molecules. With a simple mod…
Pressure-induced densification of vitreous silica: insight from elastic properties
Coralie Weigel, Marouane Mebarki, Sébastien Clément +3
\textit{In situ} high-pressure Brillouin light scattering experiments along loading-unloading paths are used to investigate the compressibility of vitreous silica. An accurate equa…
Elastic softness of hybrid lead halide perovskites
A. C. Ferreira, A. Létoublon, S. Paofai +10
Much recent attention has been devoted towards unravelling the microscopic optoelectronic properties of hybrid organic-inorganic perovskites (HOP). Here we investigate by coherent…