Douglas L Abernathy Distinguished Scientist and Group Leader, Direct Geometry Spectroscopy Contact abernathydl@ornl.gov | 865.617.5624 All Publications Energy dependence of the spin excitation anisotropy in uniaxial-strained BaFe1.9Ni0.1As2... Lattice Vibrations Boost Demagnetization Entropy in Shape Memory Alloy... Phonon quarticity induced by changes in phonon-tracked hybridization during lattice expansion and its stabilization of rutile... Phonon anharmonicity of monoclinic zirconia and yttrium-stabilized zirconia... Twisting Phonons in Higher Manganese Silicides with a Complex Nowotny Chimney Ladder Structure... Heavy-impurity resonance, hybridization, and phonon spectral functions in Fe 1− x M x Si (M= Ir, Os)... Heavy-impurity resonance, hybridization, and phonon spectral functions in Fe1-xMxSi, M=Ir,Os... The ARCS Radial Collimator... Extracting source parameters from beam monitors on a chopper spectrometer... Phonon anharmonicity in silicon from 100 to 1500 K... Anharmonicity and Atomic Distribution of SnTe and PbTe Thermoelectrics... Evidence for a common physical origin of the Landau and BEC theories of super uidity... Metallization of vanadium dioxide driven by large phonon entropy... Direct measurement of the spin gap in a quasi-one dimensional clinopyroxene: NaTiSi2O6... Modified magnetism within the coherence volume of superconducting FeSeTe... Multiple high-temperature transitions driven by dynamical structures in NaI... The effect of pnictogen height on spin waves in iron pnictides... A comparison of four direct geometry time-of-flight spectrometers at the Spallation Neutron Source... Neutron Scattering Measurements of Anisotropic Magnetic Exchange Interactions in Semiconducting K0.85Fe1.54Se2 (TN=280K)... Using Monte Carlo ray tracing simulations to model the quantum harmonic oscillator modes observed in uranium nitride... Direct observation of dynamic charge stripes in La2–xSrxNiO4... Phonon Density of States and Anharmonicity of UO2... Phonon Spectrum of SrFe2As2 determined by multizone phonon refinement... Anharmonic lattice dynamics of Ag2O studied by inelastic neutron scattering and first-principles molecular dynamics simulatio... Molecular quantum magnetism in LiZn2Mo3O8... Pagination First page « First Previous page ‹‹ … Page 4 Current page 5 Page 6 … Next page ›› Last page Last » Key Links Curriculum Vitae ORCID ARCS Instrument Page Organizations Neutron Sciences Directorate Neutron Scattering Division Spectroscopy Section Direct Geometry Group