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Experimental manifestations of the Nb4+-O- polaronic excitons in KTa0.988Nb0.012O3.

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F11%3A00368223" target="_blank" >RIV/68378271:_____/11:00368223 - isvavai.cz</a>

  • Result on the web

    <a href="http://dx.doi.org/10.1103/PhysRevB.84.174118" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.84.174118</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1103/PhysRevB.84.174118" target="_blank" >10.1103/PhysRevB.84.174118</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Experimental manifestations of the Nb4+-O- polaronic excitons in KTa0.988Nb0.012O3.

  • Original language description

    The formation of the photopolaronic excitons has been detected experimentally by means of the photoinduced EPR studies of KTa0.988Nb0.012O3 crystals.The signal is attributed to the single trapped charge carriers.The anisotropic spectrum is caused by theaxial centers oriented along the C4 axes.The anisotropic spectrum is attributed to the Nb4+-O- polaronic excitons.The temperature dependence of the anisotropic component is characterized by two activation energies: the internal dynamics activation energy(3.7 meV), which makes the EPR spectrum unobservable above 10 K, and the destruction energy (52 meV).By comparing the anisotropic photo-EPR spectrum and the photoinduced optical absorption temperature dependencies, we found that the Nb4+-O- polaronic excitons also manifested themselves via the wide absorption band at 0.7 eV arising under ultraviolet light excitation.Klíčová slova: photoinduced EPR, Nb4+-O- polaronic excitons , KTa0.988Nb0.012O3

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

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

Result continuities

  • Project

    <a href="/en/project/1M06002" target="_blank" >1M06002: Optical structures, detection systems and relevant technologies for low photon number applications</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2011

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Physical Review. B

  • ISSN

    1098-0121

  • e-ISSN

  • Volume of the periodical

    84

  • Issue of the periodical within the volume

    17

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    7

  • Pages from-to

  • UT code for WoS article

    000297294500005

  • EID of the result in the Scopus database