Intrinsic localized modes observed in the high-temperature vibrational spectrum of NaI

M. E. Manley; A. J. Sievers; J. W. Lynn; S. A. Kiselev; N. I. Agladze; Y. Chen; A. Llobet; A. Alatas

doi:10.1103/PhysRevB.79.134304

Intrinsic localized modes observed in the high-temperature vibrational spectrum of NaI

M. E. Manley, A. J. Sievers, J. W. Lynn, S. A. Kiselev, N. I. Agladze, Y. Chen, A. Llobet, A. Alatas

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113 Scopus citations

Abstract

Inelastic neutron measurements of the high-temperature lattice excitations in NaI show that in thermal equilibrium at 555 K an intrinsic mode, localized in three dimensions, occurs at a single frequency near the center of the spectral phonon gap, polarized along [111]. At higher temperatures the intrinsic localized mode gains intensity. Higher energy inelastic neutron and x-ray scattering measurements on a room-temperature NaI crystal indicate that the creation energy of the ground state of the intrinsic localized mode is 299 meV.

Original language	English
Article number	134304
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	79
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.79.134304
State	Published - Apr 1 2009
Externally published	Yes

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abstract = "Inelastic neutron measurements of the high-temperature lattice excitations in NaI show that in thermal equilibrium at 555 K an intrinsic mode, localized in three dimensions, occurs at a single frequency near the center of the spectral phonon gap, polarized along [111]. At higher temperatures the intrinsic localized mode gains intensity. Higher energy inelastic neutron and x-ray scattering measurements on a room-temperature NaI crystal indicate that the creation energy of the ground state of the intrinsic localized mode is 299 meV.",

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AU - Manley, M. E.

AU - Sievers, A. J.

AU - Lynn, J. W.

AU - Kiselev, S. A.

AU - Agladze, N. I.

AU - Chen, Y.

AU - Llobet, A.

AU - Alatas, A.

PY - 2009/4/1

Y1 - 2009/4/1

N2 - Inelastic neutron measurements of the high-temperature lattice excitations in NaI show that in thermal equilibrium at 555 K an intrinsic mode, localized in three dimensions, occurs at a single frequency near the center of the spectral phonon gap, polarized along [111]. At higher temperatures the intrinsic localized mode gains intensity. Higher energy inelastic neutron and x-ray scattering measurements on a room-temperature NaI crystal indicate that the creation energy of the ground state of the intrinsic localized mode is 299 meV.

AB - Inelastic neutron measurements of the high-temperature lattice excitations in NaI show that in thermal equilibrium at 555 K an intrinsic mode, localized in three dimensions, occurs at a single frequency near the center of the spectral phonon gap, polarized along [111]. At higher temperatures the intrinsic localized mode gains intensity. Higher energy inelastic neutron and x-ray scattering measurements on a room-temperature NaI crystal indicate that the creation energy of the ground state of the intrinsic localized mode is 299 meV.

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Intrinsic localized modes observed in the high-temperature vibrational spectrum of NaI

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