activity
20002026
most citedDirect evidence of weakly dispersed and strongly anharmonic optical phonons in hybrid perovskites

86 citations · 286 across the 15 of their papers we have counts for

collaborators

15 papers

cond-mat.dis-nn2026

Percolation Criticality of Amorphous-Amorphous Transitions in Compressed Glasses

Julien Perradin, Simona Ispas, Ricardo V. Paredes +2

The low-to-high-density transition in compressed silica glass is investigated using percolation theory. Large-scale molecular dynamics simulations of SiO glasses, with system s…

cond-mat.dis-nn2026

Nexus-CAT: A Computational Framework to Define Long-Range Structural Descriptors in Glassy Materials from Percolation Theory

Julien Perradin, Simona Ispas, Anwar Hasmy +1

Nexus-CAT (Cluster Analysis Toolkit) is an open-source Python package for cluster detection and percolation analysis of atomistic simulation trajectories. Standard structural tools…

cond-mat.mtrl-sci2021★ 23 cited

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…

cond-mat.dis-nn2021

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…

cond-mat.mtrl-sci2020★ 86 cited

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…

cond-mat.dis-nn2019★ 1 cited

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…