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Intrinsic Localized Modes in Alkali Halides

Project goals

The aim of this projectis to examine the role of intrinsic localized modes in simple anharmonic discrete lattices, in order to make a consistent reference study allowing to appreciate their function in dynamical and thermodynamical properties of such systems. In particular, we would like to check whether the anharmonic localized mode reported recently in NaI:Tl crystals [Phys. Rev. B 79, 134304 (2009)] is of an intrinsic or extrinsic (impurity-induced) nature, and whether similar localized modes are present in the spectra other compounds of this family.

Keywords

localizationinelasticneutronscatteringalkalihalidesspectroscopy

Public support

  • Provider

    Czech Science Foundation

  • Programme

    Post-graduate (doctorate) grants

  • Call for proposals

    Postdoktorandské granty 11 (SGA02011GA1PD)

  • Main participants

  • Contest type

    VS - Public tender

  • Contract ID

    P204-11-P404

Alternative language

  • Project name in Czech

    Intrinzické lokalizované mody v alkalických halogenidech

  • Annotation in Czech

    Cílem tohoto projektu je prozkoumat úlohu intrinzických lokalizovaných modů v jednoduchých enharmonických diskrétních mřížkách pro posouzení jejich vlivu na obecné dynamické a termodynamické vlastnosti těchto systémů. Zejména je třeba ověřit, zda anharmonický lokalizovaný mod pozorovaný v krystalu NaI:Tl [Phys. Rev. B 79, 134304 (2009)] je povahy intrinzické, nebo extrinzické (indukované příměsemi), a jestli jsou podobné lokalizované mody přítomny ve spektrech dalších sloučenin z této skupiny.

Scientific branches

  • R&D category

    ZV - Basic research

  • CEP classification - main branch

    BM - Solid-state physics and magnetism

  • CEP - secondary branch

  • CEP - another secondary branch

  • 10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Completed project evaluation

  • Provider evaluation

    U - Uspěl podle zadání (s publikovanými či patentovanými výsledky atd.)

  • Project results evaluation

    The aim was to investigate the localized modes and, in particular, the nature of the observed one. The 1st year were affected by stay outside the CR, the 2nd presents a progress, published in 2 papers, plan for the 3rd one was 2 works (not exist now). The investigator writes "the previous observations COULD HAVE BEEN CAUSED by different quality or by unwanted effects?.

Solution timeline

  • Realization period - beginning

    Jan 1, 2011

  • Realization period - end

    Dec 31, 2013

  • Project status

    U - Finished project

  • Latest support payment

    Jun 12, 2013

Data delivery to CEP

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

  • Data delivery code

    CEP15-GA0-GP-U/02:2

  • Data delivery date

    May 6, 2016

Finance

  • Total approved costs

    1,516 thou. CZK

  • Public financial support

    1,516 thou. CZK

  • Other public sources

    0 thou. CZK

  • Non public and foreign sources

    0 thou. CZK

Basic information

Recognised costs

1 516 CZK thou.

Public support

1 516 CZK thou.

100%


Provider

Czech Science Foundation

CEP

BM - Solid-state physics and magnetism

Solution period

01. 01. 2011 - 31. 12. 2013