45 citations · 160 across the 11 of their papers we have counts for
5 papers · 2 filters
A comparison of Monte-Carlo simulations using RESTRAX and McSTAS with experiment on IN14
A. R. Wildes, J. Saroun, E. Farhi +3
Monte-Carlo simulations of a focusing supermirror guide after the monochromator on the IN14 cold neutron three-axis spectrometer, I.L.L. were carried out using the instrument simul…
The broad Brillouin doublets and central peak of KTaO_3
E. Farhi, A. K. Tagantsev, B. Hehlen +3
The incipient ferroelectric KTaO3 presents low-T Brillouin spectra anomalies,e.g. a broad central peak (CP), and some additional Brillouin doublets (BD), whose origin is interprete…
The Broad Brillouin Doublet and CP of Ktao_3 : Second Sound vs. Two-Phonon Difference Scattering
E. Farhi, A. K. Tagantsev, B. Hehlen +3
Low-T Brillouin spectra of the incipient ferroelectric KTaO3 exhibit a broad central peak (CP), and additional Brillouin doublets (BD), that can both be related to phonon-density f…
Low energy phonon spectrum and its parameterization in pure KTaO3 under 80 K
E. Farhi, A. K. Tagantsev, R. Currat +3
High resolution data on low energy phonon branches (acoustic and soft optic) along the three principal symmetry axes in pure KTaO3 were obtained by cold neutron inelastic scatterin…
Optical mode crossings and the low temperature anomalies of SrTiO3
E. Courtens, B. Hehlen, E. Farhi +1
Optical mode crossing is not a plausible explanation for the new broad Brillouin doublet nor for the strong acoustic anomalies observed at low temperatures in SrTiO3. Data presente…