Goremychkin, E. A., Osborn, R., Sashin, I. L., Riseborough, P., Rainford, B. D., Adroja, D. T., ...
We present a neutron scattering investigation of Ce1-xYxAl3 as a function of chemical pressure, which induces a transition from heavy fermion behavior in CeAl3 (TK = 5 K) to a mixed valence state at...
Inelastic Neutron Scattering Studies of the Intermediate Valence Compound CePd3 (2009)
Fanelli, V. R., Lawrence, J. M., Wang, C. H., Christianson, A. D., Bauer, E. D., McClellan, K. J., ...
Inelastic neutron scattering measurements on a CePd3 single crystal show a magnetic response at 300 K that is independent of momentum transfer with a Lorentzian quasielastic energy spectrum with a...
Evolution of spin excitations into the superconducting state in FeTe1-xSex (2009)
Lumsden, M. D., Christianson, A. D., Goremychkin, E. A., Nagler, S. E., Mook, H. A., Stone, M. B., ...
The nature of the superconducting state in the recently discovered Fe-based superconductors1-3 is the subject of intense scrutiny. Neutron scattering investigations have already elucidated a strong...
Osborn, R., Rosenkranz, S., Goremychkin, E. A., Christianson, A. D.
Neutrons have played an important role in advancing our understanding of the pairing mechanism and the symmetry of the superconducting energy gap in the iron arsenide compounds. Neutron measurements...
Two-dimensional resonant magnetic excitation in BaFe1.84Co0.16As2 (2008)
Lumsden, M. D., Christianson, A. D., Parshall, D., Stone, M. B., Nagler, S. E., MacDougall, G. J., ...
Inelastic neutron scattering measurements on single crystals of superconducting BaFe1.84Co0.16As2 reveal a magnetic excitation located at wavevectors (1/2 1/2 L) in tetragonal notation. On cooling...
Phonon Density of States of LaFeAsO1-xFx (2008)
Christianson, A. D., Lumsden, M. D., Delaire, O., Stone, M. B., Abernathy, D. L., McGuire, M. A., ...
We have studied the phonon density of states (PDOS) in LaFeAsO1-xFx with inelastic neutron scattering methods. The PDOS of the parent compound (x=0) is very similar to the PDOS of samples optimally...
Resonant Spin Excitation in the High Temperature Superconductor Ba0.6K0.4Fe2As2 (2008)
Christianson, A. D., Goremychkin, E. A., Osborn, R., Rosenkranz, S., Lumsden, M. D., Malliakas, C. D., ...
The recent observations of superconductivity at temperatures up to 55K in compounds containing layers of iron arsenide have revealed a new class of high temperature superconductors that show striking...
Phonon Density of States of LaFeAsO1-xFx (2008)
Christianson, A. D., Lumsden, M. D., Delaire, O., Stone, M. B., Abernathy, D. L., McGuire, M. A., ...
We have studied the phonon density of states (PDOS) in LaFeAsO1-xFx with inelastic neutron scattering methods. The PDOS of the parent compound(x=0) is very similar to the PDOS of samples optimally...
Spin Glass Order Induced by Dynamic Frustration (2008)
Goremychkin, E. A., Osborn, R., Rainford, B. D., Macaluso, R. T., Adroja, D. T., Koza, M.
Spin glasses are systems whose magnetic moments freeze at low temperature into random orientations without long-range order. It is generally accepted that both frustration and disorder are essential...
Neutron diffraction study of magnetic field induced behavior in the heavy Fermion Ce3CO4Sn13 (2008)
Christianson, A.D., Goremychkin, E.A., Gardher, J.S., Kang, H.J., Chung, J.H., Manuel, R., ...
The specific heat of Ce3Co4Sn13 exhibits a crossover from heavy Fermion behavior with antiferromagnetic correlations at low field to single impurity Kondo behavior above 2 T. We have performed...
Inelastic magnetic neutron scattering in CePd3 (2008)
Lawrence, J.M., Fanelli, V.R., Goremychkin, E.A., Osborn, R., Bauer, E.D., McClellan, K.J., ...
We have performed time-of-flight neutron scattering measurements on a single crystal of the intermediate valence compound CePd3. At 10 K, a Kondo-esque inelastic magnetic scattering peak occurs near...
Anisotropic intermediate valence in Yb2Rh3Ga9 (2006)
Christianson, A.D., Lawrence, J.M., Lobos, A.M., Aligia, A.A., Bauer, E.D., Moreno, N.O., ...
We report measurements of the inelastic neutron scattering spectrum for the anisotropic intermediate valence system Yb2Rh3Ga9. Calculations for the Anderson impurity model with crystal field terms...
Localized excitation in the hybridization gap in YbAl3 (2006)
Christianson, A.D., Fanelli, V.R., Lawrence, J.M., Goremychkin, E.A., Osborn, R., Bauer, E.D., ...
The intermediate valence compound YbAl3 exhibits a broad magnetic excitation in the inelastic neutron scattering spectrum with characteristic energy E150 meV, equal to the Kondo energy (TK~600–700...
Magnetic and structural instabilities in CePd2Al2 and LaPd2Al2 (2006)
Chapon, L.C., Goremychkin, E.A., Osborn, R., Rainford, B.D., Short, S.
We have investigated the crystal and magnetic structure of the RPd2Al2 compounds (R=La, Ce) by neutron powder diffraction (ND) and inelastic neutron scattering (INS). The ND study shows that both...
Goremychkin, E.A., Osborn, R., Rainford, B.D., Bauer, E.D., Maple, M.B., Koza, M.
We have performed inelastic neutron scattering measurements of the singlet-triplet crystal-field (CF) excitation in the filled skutterudite compound PrOs4Sb12 in the vicinity of the superconducting...
Influence of the crystal field potential on the superconducting properties of PrRU4Sb12 (2005)
Adroja, D.T., Park, J.G., Goremychkin, E.A., Takeda, N., Ishikawa, M., McEwen, K.A., ...
We have determined the crystal field potential of the superconductor PrRu4Sb12 View the MathML sourceusing inelastic neutron scattering. The ground state of the Pr+3 ions in Th point group symmetry...
Anisotropic intermediate valence in Yb2M3Ga9 (M = Rh, Ir) (2005)
Christianson, A.D., Lawrence, J.M., Lobos, A.M., Aligia, A.A., Bauer, E.D., Moreno, N.O., ...
Crystal field potential of PrOs4Sb12: consequences for superconductivity (2004)
Goremychkin, E.A., Osborn, R., Bauer, E.D., Maple, M.B., Frederick, N.A., Yuhasz, W.M., ...
The results of inelastic neutron scattering provide a solution for the crystal field level scheme in PrOs4Sb12, in which the ground state in the cubic crystal field potential of Th symmetry is a...
Manley, M. E., McQueeney, R. J., Fultz, B., Swan-Wood, T., Delaire, O., Goremychkin, E. A., ...
Phonon densities of states (DOS) were obtained from inelastic neutron scattering measurements on Ce0.9Th0.1 at temperatures from 10 to 300 K. The alpha phase showed a significant softening of its...
Quantitative analysis of UH3 in U metal and UO2 matrices by neutron vibrational spectroscopy (2002)
Glagolenko, I.Y., Carney, K.P., Kern, S., Goremychkin, E.A., Udovic, T.J., Copley, J.R.D., ...
The ignition of UH3 has resulted in uranium fires. Neutron spectroscopy is proposed to quantify UH3 in fuel at risk. Spectra of UH3 in UO2 and U metal were obtained using two instruments at Argonne...
Phonon density of states in MgB2 (2001)
Osborn, R., Goremychkin, E.A., Kolesnikov, A.I., Hinks, D.G.
We report inelastic neutron scattering measurements of the phonon density of states in Mg 11B2, which has a superconducting transition at 39.2 K. The acoustic phonons extend in energy to 36 meV, and...