1986
DOI: 10.1103/physrevb.33.7144
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Systematic study of the lattice dynamics of the uranium rocksalt-structure compounds

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Cited by 75 publications
(51 citation statements)
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“…The solid red curve is a fit to a superposition of Gaussian peaks at the mode positions. The measured phonon dispersion relations are consistent with earlier investigations 2,20 . The black lines in Fig.…”
Section: Conventional Phononssupporting
confidence: 81%
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“…The solid red curve is a fit to a superposition of Gaussian peaks at the mode positions. The measured phonon dispersion relations are consistent with earlier investigations 2,20 . The black lines in Fig.…”
Section: Conventional Phononssupporting
confidence: 81%
“…The vibrational spectrum at energies above those of the highest optic phonon mode is generally a complicated many phonon continuum that is often weak and featureless. In sharp contrast, for the binary solid uranium nitride (UN) [2][3][4][5] , where the nitrogen atoms are very light compared with the uranium atoms, our inelastic neutron-scattering measurements reveal that the high-energy spectrum is greatly simplified and consists of a set of equally-spaced, well-defined modes that can be measured to energies at least ten times as large as that of the optic phonon modes. This data is best explained by assuming that each nitrogen atom behaves as an independent quantum harmonic oscillator (QHO), and the nitrogen motion is therefore a rare experimental realization of an exactly soluble, three-dimensional model in quantum mechanics 6 .…”
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confidence: 93%
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