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21 papers · 1 filter
Neutron scattering study of ferroelectric Sn2P2S6 under pressure
P. Ondrejkovic, M. Kempa, Y. Vysochanskii +4
Ferroelectric phase transition in the semiconductor Sn2P2S6 single crystal has been studied by means of neutron scattering in the pressure-temperature range adjacent to the anticip…
Phononic filter effect of rattling phonons in the thermoelectric clathrate BaGeNi
Holger Euchner, Stephane Pailhès, Lien Nguyen +6
One of the key requirements for good thermoelectric materials is a low lattice thermal conductivity. Here we present a combined neutron scattering and theoretical investigation of…
Two Ising-like magnetic excitations in a single-layer cuprate superconductor
Yuan Li, G. Yu, M. K. Chan +10
There exists increasing evidence that the phase diagram of the high-transition temperature (Tc) cuprate superconductors is controlled by a quantum critical point. One distinct theo…
Switching Reversibly between Ultrastable and Unstable Foams
Anne-Laure Fameau, Arnaud Saint-Jalmes, Fabrice Cousin +7
Ultrastable foams with an optimal foamability have been obtained using hydroxyl fatty acids tubes. The stabilization results from the adsorption of monomers at the air-water interf…
Nanorods of Well-Defined Length and Monodisperse Cross-Section Obtained from Electrostatic Complexation of Nanoparticles with a Semiflexible Biopolymer
Li Shi, Florent Carn, François Boué +2
We show by combining small-angle X-ray scattering (SAXS) and cryo-transmission electron microscopy (cryo-TEM) that anionic silica nanoparticles (SiNPs) assemble into well-defined 1…
Spin liquid correlations, anisotropic exchange and symmetry breaking in Tb2Ti2O7
Sylvain Petit, Pierre Bonville, Julien Robert +2
We have studied the low energy spin dynamics between 4.6K and 0.07K in a Tb2Ti2O7 single crystal sample, by means of inelastic neutron scattering experiments. The spectra consist i…