Search Results - "CURRAT, R"

Mixed acoustic phonons and phase modes in an aperiodic composite crystal by Toudic, B, Lefort, R, Ecolivet, C, Guérin, L, Currat, R, Bourges, P, Breczewski, T

“…Aperiodic crystals which are long range ordered materials present original dynamics features due to the lack of translational symmetry formally implying the…”
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SrTiO3 displacive transition revisited via coherent X-ray diffraction by Ravy, S, Le Bolloc'h, D, Currat, R, Fluerasu, A, Mocuta, C, Dkhil, B

“…We present a coherent x-ray diffraction study of the antiferrodistortive displacive transition of SrTiO3, a prototypical example of a phase transition for…”
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ILL's renewed thermal three-axis spectrometer IN8: A review of its first three years on duty by Hiess, A., Jiménez-Ruiz, M., Courtois, P., Currat, R., Kulda, J., Bermejo, F.J.

“…The primary spectrometer of ILL's thermal three-axis spectrometer IN8 has undergone a major rebuild during the last few years. We here summarise the…”
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Sound-mode broadening in quasicrystals: A simple phenomenological model by de Boissieu, M., Currat, R., Francoual, S., Kats, E.

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Properties on request in semi-Heusler phases by Pierre, J., Skolozdra, R.V., Tobola, J., Kaprzyk, S., Hordequin, C., Kouacou, M.A., Karla, I., Currat, R., Leliévre-Berna, E.

“…Various transport and magnetic properties of semi-Heusler phases are described, which arise from the particular crystallographic structure and narrow band…”
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Motional ordering of a charge-density wave in the sliding state by Danneau, R, Ayari, A, Rideau, D, Requardt, H, Lorenzo, J E, Ortega, L, Monceau, P, Currat, R, Grübel, G

“…We have used high-resolution x-ray scattering, in the presence of an applied direct current, for studying the correlation lengths in the sliding charge-density…”
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Dynamics of long-wavelength phason fluctuations in the i-Al-Pd-Mn quasicrystal by Francoual, S., Livet, F., de Boissieu, M., Yakhou, F., Bley, F., Létoublon, A., Caudron, R., Gastaldi, J., Currat, R.

“…We report on the dynamics of phason modes in the i-Al-Pd-Mn icosahedral quasicrystal, measured between room temperature and 650°C, using the X-ray intensity…”
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Sound modes in composite incommensurate crystals by Currat, R., Kats, E., Luk'yanchuk, I.

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Experimental study of the dynamics of Zn2Mg Laves phase by Francoual, S., de Boissieu, M., Currat, R., Shibata, K., Sidis, Y., Hennion, B., Tsai, A.P.

“…A way to address the problem of phonons in quasicrystals (QCs) is to compare their dynamical response with that of approximant crystalline structures. Although…”
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IMPS: A multianalyser detector system for the thermal three-axis spectrometer IN8 by Jiménez-Ruiz, M., Hiess, A., Currat, R., Kulda, J., Bermejo, F.J.

“…The primary spectrometer of the ILL's thermal-beam three-axis spectrometer IN8 has recently been rebuilt to increase the instrument flexibility as well as the…”
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Magnetic excitations in the half-metallic NiMnSb ferromagnet: From Heisenberg-type to itinerant behaviour by Hordequin, C., Pierre, J., Currat, R.

“…Magnetization, transport and inelastic neutron scattering experiments were performed on single crystals of the half metallic ferromagnet NiMnSb. A change in…”
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Sliding-induced decoupling and charge transfer between the coexisting Q1 and Q2 charge density waves in NbSe3 by AYARI, A, DANNEAU, R, REQUARDT, H, ORTEGA, L, LORENZO, J. E, MONCEAU, P, CURRAT, R, BRAZOVSKII, S, GRÜBEL, G

“…Using high-resolution x-ray scattering in the presence of an applied current, we report evidence for a dynamical decoupling between the two NbSe3…”
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Low energy phonon spectrum and its parameterization in pure KTaO3 below 80 K by Farhi, E., Tagantsev, A.K., Currat, R., Hehlen, B., Courtens, E., Boatner, L.A.

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Atomic dynamics of i-ScZnMg and its 1/1 approximant phase: Experiment and simulation by Mihalkovič, M., Francoual, S., Shibata, K., Boissieu, M. De, Baron, A.Q.R., Sidis, Y., Ishimasa, T., Wu, D., Lograsso, T., Regnault, L. -Pierre, Gähler, F., Tsutsui, S., Hennion, B., Bastie, P., Sato, T.J., Takakura, H., Currat, R., Tsai, A.-P.

“…Quasicrystals are long-range ordered materials that lack translational invariance so that the study of their physical properties remains a challenging problem…”
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Temperature dependence of the 8-Å superstructure in decagonal Al–Co–Ni by Frey, F, Weidner, E, Hradil, K, de Boissieu, M, Letoublon, A, McIntyre, G, Currat, R, Tsai, A.-P

“…Diffuse layers corresponding to an 8 Å superperiod along the ‘periodic’ axis of decagonal Al–Ni–Co phases were investigated by in situ X-ray and neutron…”
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Structural Evidence for Ta-Tetramerization Displacements in the Charge-Density-Wave Compound (TaSe{sub 4}) {sub 2}I from X-Ray Anomalous Diffraction by Favre-Nicolin, V., Bos, S., Lorenzo, J. E., Hodeau, J-L., Berar, J-F., Monceau, P., Currat, R., Levy, F., Berger, H.

“…We use the anomalous x-ray diffraction technique to investigate the nature of the tantalum displacement pattern in the modulated phase of the…”
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Observation of a sample-dependent 37 K anomaly on the lattice parameters of strontium titanate by Arzel, L, Hehlen, B, Dénoyer, F, Currat, R, Liss, K.-D, Courtens, E

“…The lattice parameters of tetragonal strontium titanate are determined to about 1 part in 106 with penetrating X-rays. While no peculiarity is detected in a…”
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Phonon Symmetry Selection Rules for Inelastic Neutron Scattering by Perez-Mato, J. M., Aroyo, M., Hlinka, J., Quilichini, M., Currat, R.

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Soft modes and phonon interactions in Sn2P2S6 studied by neutron scattering by EIJT, S. W. H, CURRAT, R, LORENZO, J. E, SAINT-GREGOIRE, P, HENNION, B, VYSOCHANSKII, Y. M

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Dynamical molecular disorder and diffuse scattering in an alkane/urea incommensurate inclusion compound by LEFORT, R, TOUDIC, B, ETRILLARD, J, GUILLAUME, F, BOURGES, P, CURRAT, R, BRECZEWSKI, T

“…The diffraction pattern of n-alkane/urea inclusion compounds is known to contain a broad diffuse scattering related to the molecular form factor of the alkane…”
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