Bernard Hehlen
Bernard Hehlen
université montpellier 2
Adresse e-mail validée de umontpellier.fr
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Hyper-Raman scattering observation of the boson peak in vitreous silica
B Hehlen, E Courtens, R Vacher, A Yamanaka, M Kataoka, K Inoue
Physical review letters 84 (23), 5355, 2000
1692000
Evidence for competing orderings in strontium titanate from hyper-Raman scattering spectroscopy
A Yamanaka, M Kataoka, Y Inaba, K Inoue, B Hehlen, E Courtens
EPL (Europhysics Letters) 50 (5), 688, 2000
1562000
The vibrational modes of glasses
E Courtens, M Foret, B Hehlen, R Vacher
Solid state communications 117 (3), 187-200, 2001
1162001
Observation of a Doublet in the Quasielastic Central Peak of Quantum-Paraelectric SrTi O 3
B Hehlen, AL Pérou, E Courtens, R Vacher
Physical review letters 75 (12), 2416, 1995
941995
Inter-tetrahedra bond angle of permanently densified silicas extracted from their Raman spectra
B Hehlen
Journal of Physics: Condensed Matter 22 (2), 025401, 2009
842009
Elastic Constants, Optical Phonons, and Molecular Relaxations in the High Temperature Plastic Phase of the CH3NH3PbBr3 Hybrid Perovskite
A Létoublon, S Paofai, B Ruffle, P Bourges, B Hehlen, T Michel, C Ecolivet, ...
The journal of physical chemistry letters 7 (19), 3776-3784, 2016
772016
Phonon anomalies in SrTiO3 in the quantum paraelectric regime
E Courtens, G Coddens, B Hennion, B Hehlen, J Pelous, R Vacher
Physica Scripta 1993 (T49B), 430, 1993
721993
Raman response of network modifier cations in alumino-silicate glasses
B Hehlen, DR Neuville
The Journal of Physical Chemistry B 119 (10), 4093-4098, 2015
652015
Soft Mode Doublet in Relaxor Investigated with Hyper-Raman Scattering
A Al-Zein, J Hlinka, J Rouquette, B Hehlen
Physical review letters 105 (1), 017601, 2010
522010
Hyper-Raman scattering from vitreous boron oxide: coherent enhancement of the boson peak
G Simon, B Hehlen, E Courtens, E Longueteau, R Vacher
Physical review letters 96 (10), 105502, 2006
452006
Neutron Brillouin and Umklapp scattering from glassy selenium
M Foret, B Hehlen, G Taillades, E Courtens, R Vacher, H Casalta, ...
Physical review letters 81 (10), 2100, 1998
421998
Vibrational modes and local order in permanently densified silica glasses: Femtosecond and Raman spectroscopy study
J Burgin, C Guillon, P Langot, F Vallée, B Hehlen, M Foret
Physical Review B 78 (18), 184203, 2008
382008
Brillouin-scattering observation of the TA-TO coupling in SrTiO 3
B Hehlen, L Arzel, AK Tagantsev, E Courtens, Y Inaba, A Yamanaka, ...
Physical Review B 57 (22), R13989, 1998
371998
The crossover from propagating to strongly scattered acoustic modes of glasses observed in densified silica
E Courtens, M Foret, B Hehlen, B Rufflé, R Vacher
Journal of Physics: Condensed Matter 15 (11), S1279, 2003
322003
Low energy phonon spectrum and its parameterization in pure KTaO 3 below 80 K
E Farhi, AK Tagantsev, R Currat, B Hehlen, E Courtens, LA Boatner
The European Physical Journal B-Condensed Matter and Complex Systems 15 (4 …, 2000
322000
The vibrations of vitreous silica observed in hyper‐Raman scattering
B Hehlen, G Simon
Journal of Raman Spectroscopy 43 (12), 1941-1950, 2012
272012
Atomic charge distribution in sodosilicate glasses from terahertz time-domain spectroscopy
EPJ Parrott, JA Zeitler, G Simon, B Hehlen, LF Gladden, SN Taraskin, ...
Physical Review B 82 (14), 140203, 2010
272010
Hyper-Raman scattering analysis of the vibrations in vitreous boron oxide
G Simon, B Hehlen, R Vacher, E Courtens
Physical Review B 76 (5), 054210, 2007
272007
New excitations in quantum paraelectrics
E Courtens, B Hehlen, G Coddens, B Hennion
Physica B: Condensed Matter 219, 577-580, 1996
271996
Polar modes in relaxor Pb Mg 1∕ 3 Nb 2∕ 3 O 3 by hyper-Raman scattering
B Hehlen, G Simon, J Hlinka
Physical Review B 75 (5), 052104, 2007
222007
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