Intrinsic Localized Modes Observed in the High Temperature Vibrational Spectrum of NaI

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dc.creatorManley, M. E.
dc.creatorSievers, A. J.
dc.creatorLynn, J. W.
dc.creatorKiselev, S. A.
dc.creatorAgladze, N. I.
dc.creatorChen, Y.
dc.creatorLlobet, A.
dc.creatorAlatas, A.
dc.date2008-10-15
dc.date2009-04-30
dc.date.accessioned2026-07-07T13:09:44Z
dc.date.available2026-07-07T13:09:44Z
dc.descriptionInelastic 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.
dc.description17 pages, 5 figures Revised version; final version
dc.identifierhttps://arxiv.org/abs/0810.2823
dc.identifierhttp://arxiv.org/abs/0810.2823
dc.identifierPhys. Rev. B 79, 134304 (2009)
dc.identifierdoi:10.1103/PhysRevB.79.134304
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/228833
dc.subjectStrongly Correlated Electrons
dc.subjectPattern Formation and Solitons
dc.titleIntrinsic Localized Modes Observed in the High Temperature Vibrational Spectrum of NaI
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