Search Results - "Alatas, A"

Intrinsic anharmonic localization in thermoelectric PbSe by Manley, M. E., Hellman, O., Shulumba, N., May, A. F., Stonaha, P. J., Lynn, J. W., Garlea, V. O., Alatas, A., Hermann, R. P., Budai, J. D., Wang, H., Sales, B. C., Minnich, A. J.

“…Lead chalcogenides have exceptional thermoelectric properties and intriguing anharmonic lattice dynamics underlying their low thermal conductivities. An ideal…”
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Six-reflection meV-monochromator for synchrotron radiation by Toellner, T. S., Alatas, A., Said, A. H.

“…An in‐line monochromatization scheme suitable for 10–40 keV synchrotron radiation is presented based on the use of six crystal reflections that achieves meV…”
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Nematic Correlation Length in Iron-Based Superconductors Probed by Inelastic X-Ray Scattering by Merritt, A M, Weber, F, Castellan, J-P, Wolf, Th, Ishikawa, D, Said, A H, Alatas, A, Fernandes, R M, Baron, A Q R, Reznik, D

“…Nematicity is ubiquitous in electronic phases of high-T_{c} superconductors, particularly in the Fe-based systems. We used inelastic x-ray scattering to…”
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Electron-phonon coupling and the soft phonon mode in TiSe2 by Weber, F, Rosenkranz, S, Castellan, J-P, Osborn, R, Karapetrov, G, Hott, R, Heid, R, Bohnen, K-P, Alatas, A

“…We report high-resolution inelastic x-ray measurements of the soft phonon mode in the charge-density-wave compound TiSe(2). We observe a complete softening of…”
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Phonon softening near the structural transition in BaFe2As2 observed by inelastic x-ray scattering by Niedziela, Jennifer L, Parshall, D, Lokshin, Konstantin A, Safa-Sefat, Athena, Alatas, A, Egami, Takeshi

“…In this work we present the results of an inelastic x-ray scattering experiment detailing the behavior of the transverse acoustic [110] phonon in BaFe{sub…”
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Improved focusing capability for inelastic X-ray spectrometer at 3-ID of the APS: A combination of toroidal and Kirkpatrick-Baez (KB) mirrors by Alatas, A., Leu, B.M., Zhao, J., Yavaş, H., Toellner, T.S., Alp, E.E.

“…We have combined a toroidal and a KB mirror system in tandem to improve the focal spot size for the momentum-resolved inelastic X-ray scattering (IXS)…”
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Formation of a New Dynamical Mode in α -Uranium Observed by Inelastic X-Ray and Neutron Scattering by Manley, M. E., Yethiraj, M., Sinn, H., Volz, H. M., Alatas, A., Lashley, J. C., Hults, W. L., Lander, G. H., Smith, J. L.

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X-ray Bragg diffraction in asymmetric backscattering geometry by Shvyd'ko, Yu V, Lerche, M, Kuetgens, U, Rüter, H D, Alatas, A, Zhao, J

“…We observe three effects in the Bragg diffraction of x rays in backscattering geometry from asymmetrically cut crystals. First, exact Bragg backscattering…”
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Observation of a continuous phase transition in a shape-memory alloy by Lashley, J C, Shapiro, S M, Winn, B L, Opeil, C P, Manley, M E, Alatas, A, Ratcliff, W, Park, T, Fisher, R A, Mihaila, B, Riseborough, P, Salje, E K H, Smith, J L

“…Elastic neutron-scattering, inelastic x-ray scattering, specific-heat, and pressure-dependent electrical transport measurements have been made on single…”
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X-ray scattering study of the spin-Peierls transition and soft phonon behavior in TiOCl by Abel, E. T., Matan, K., Chou, F. C., Isaacs, E. D., Moncton, D. E., Sinn, H., Alatas, A., Lee, Y. S.

“…We have studied the S=1/2 quasi-one-dimensional antiferromagnet TiOCl using single crystal x-ray diffraction and inelastic x-ray scattering techniques. The Ti…”
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Microfocusing options for the inelastic X-ray scattering beamline at sector 3 of the Advanced Photon Source by Alsmadi, A. M., Alatas, A., Zhao, J. Y., Hu, M. Y., Yan, L., Alp, E. E.

“…Synchrotron radiation from third‐generation high‐brilliance storage rings is an ideal source for X‐ray microbeams. The aim of this paper is to describe a…”
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Microscopic Dynamics of Liquid Aluminum Oxide by Sinn, H., Glorieux, B., Hennet, L., Alatas, A., Hu, M., Alp, E. E., Bermejo, F. J., Price, D. L., M. -L. Saboungi

“…Collective excitations have been observed in liquid aluminum oxide at high temperatures by combining a containerless sample environment with inelastic x-ray…”
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Collective excitations in an early molten transition metal by Said, A. H., Sinn, H., Alatas, A., Burns, C. A., Price, D. L., Saboungi, M. L., Schirmacher, W.

“…We report inelastic x-ray scattering measurements of the atomic collective excitations of an early transition metal, namely liquid titanium at T=2020 K. The…”
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Acoustic phonons in chrysotile asbestos probed by high-resolution inelastic x-ray scattering by Mamontov, E., Vakhrushev, S.B., Kumzerov, Yu.A., Alatas, A., Sinn, H.

“…Acoustic phonons in an individual, oriented fiber of chrysotile asbestos (chemical formula Mg 3Si 2O 5(OH) 4) were observed at room temperature in the…”
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Intrinsic localized modes observed in the high-temperature vibrational spectrum of NaI by Manley, M. E., Sievers, A. J., Lynn, J. W., Kiselev, S. A., Agladze, N. I., Chen, Y., Llobet, A., Alatas, A.

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An inelastic X-ray spectrometer with 2.2 meV energy resolution by Sinn, H., Alp, E.E., Alatas, A., Barraza, J., Bortel, G., Burkel, E., Shu, D., Sturhahn, W., Sutter, J.P., Toellner, T.S., Zhao, J.

“…We present a new spectrometer at the Advanced Photon Source for inelastic X-ray scattering with an energy resolution of 2.2 meV at an incident energy of 21.6…”
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Intrinsically localized vibrations and the mechanical properties of α-uranium by Manley, M.E., Yethiraj, M., Sinn, H., Volz, H.M., Alatas, A., Lashley, J.C., Hults, W.L., Lander, G.H., Thoma, D.J., Smith, J.L.

“…Recent experiments have indicated that the high-temperature properties of α-uranium may be strongly influenced by the formation of randomly distributed…”
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Evidence for an instability near twice the fermi wave vector in the low electronic density liquid metal Li(NH3)4 by Burns, C A, Platzman, P M, Sinn, H, Alatas, A, Alp, E E

“…We report high-resolution inelastic x-ray scattering measurements in the metallic liquid Li(NH3)4, which to a good approximation can be treated as a dilute…”
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Phonons in doped and undoped BaFe2As2 investigated by inelastic x-ray scattering by Reznik, D, Lokshin, K, Mitchell, D C, Parshall, D, Dmowski, W, Lamago, D, Heid, R, Bohnen, K. P., Safa-Sefat, Athena, McGuire, Michael A, Sales, Brian C, Mandrus, David, Subedi, Alaska P, Singh, David J, Alatas, A, Upton, M H, Said, A. H., Cunsolo, A., Shvyd'ko, Yu. V., Egami, Takeshi

“…We measured phonon frequencies and linewidths in doped and undoped BaFe{sub 2}As{sub 2} single crystals by inelastic x-ray scattering and compared our results…”
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Elastic modulus of supercooled liquid and hot solid silicon measured by inelastic X-ray scattering by Alatas, A., Said, A.H., Sinn, H., Alp, E.E., Kodituwakku, C.N., Reinhart, B., Saboungi, M.-L., Price, D.L.

“…The dynamical structure factors of supercooled-liquid and hot-solid silicon are measured by inelastic X-ray scattering at the same temperature, 1620 K. Two…”
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