Large harmonic softening of the phonon density of states of uranium

B. Fultz; R. J. McQueeney; W. L. Hults; J. L. Smith; D. J. Thoma; R. Osborn; J. L. Robertson; M. E. Manley; C. M. Brown

doi:10.1103/PhysRevLett.86.3076

Large harmonic softening of the phonon density of states of uranium

B. Fultz, R. J. McQueeney, W. L. Hults, J. L. Smith, D. J. Thoma, R. Osborn, J. L. Robertson, M. E. Manley, C. M. Brown

Research output: Contribution to journal › Article › peer-review

76 Scopus citations

Abstract

Inelastic neutron scattering spectra from three uranium crystalline phases produced phonon density-of-states curves within the temperature range 50 to 1213 K. The alpha phase showed large thermal softening. Vibrational power spectrum was analyzed and revealed the such softening originated with the softening of the harmonic solid. This phonon softening was opposed to the vibrations in harmonic potentials.

Original language	English
Pages (from-to)	3076-3079
Number of pages	4
Journal	Physical Review Letters
Volume	86
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.86.3076
State	Published - Apr 2 2001
Externally published	Yes

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10.1103/PhysRevLett.86.3076

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title = "Large harmonic softening of the phonon density of states of uranium",

abstract = "Inelastic neutron scattering spectra from three uranium crystalline phases produced phonon density-of-states curves within the temperature range 50 to 1213 K. The alpha phase showed large thermal softening. Vibrational power spectrum was analyzed and revealed the such softening originated with the softening of the harmonic solid. This phonon softening was opposed to the vibrations in harmonic potentials.",

author = "B. Fultz and McQueeney, {R. J.} and Hults, {W. L.} and Smith, {J. L.} and Thoma, {D. J.} and R. Osborn and Robertson, {J. L.} and Manley, {M. E.} and Brown, {C. M.}",

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AU - Fultz, B.

AU - McQueeney, R. J.

AU - Hults, W. L.

AU - Smith, J. L.

AU - Thoma, D. J.

AU - Osborn, R.

AU - Robertson, J. L.

AU - Manley, M. E.

AU - Brown, C. M.

PY - 2001/4/2

Y1 - 2001/4/2

N2 - Inelastic neutron scattering spectra from three uranium crystalline phases produced phonon density-of-states curves within the temperature range 50 to 1213 K. The alpha phase showed large thermal softening. Vibrational power spectrum was analyzed and revealed the such softening originated with the softening of the harmonic solid. This phonon softening was opposed to the vibrations in harmonic potentials.

AB - Inelastic neutron scattering spectra from three uranium crystalline phases produced phonon density-of-states curves within the temperature range 50 to 1213 K. The alpha phase showed large thermal softening. Vibrational power spectrum was analyzed and revealed the such softening originated with the softening of the harmonic solid. This phonon softening was opposed to the vibrations in harmonic potentials.

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U2 - 10.1103/PhysRevLett.86.3076

DO - 10.1103/PhysRevLett.86.3076

M3 - Article

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VL - 86

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JO - Physical Review Letters

JF - Physical Review Letters

IS - 14

ER -

Large harmonic softening of the phonon density of states of uranium

Abstract

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