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Tuning of dielectric properties of SrTiO.sub.3./sub. in the terahertz range

  1. 1.
    SYSNO ASEP0369878
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleTuning of dielectric properties of SrTiO3 in the terahertz range
    Author(s) Skoromets, Volodymyr (FZU-D) RID
    Kadlec, Filip (FZU-D) RID, ORCID, SAI
    Kadlec, Christelle (FZU-D) RID, ORCID
    Němec, Hynek (FZU-D) RID, ORCID, SAI
    Rychetský, Ivan (FZU-D) RID, ORCID
    Panaitov, G. (DE)
    Müller, V. (DE)
    Fattakhova-Rohlfing, D. (DE)
    Moch, P. (FR)
    Kužel, Petr (FZU-D) RID, ORCID, SAI
    Source TitlePhysical Review. B - ISSN 1098-0121
    Roč. 84, č. 17 (2011), "174121-1"-"174121-10"
    Number of pages10 s.
    Languageeng - English
    CountryUS - United States
    Keywordsstrontium titanate ; terahertz spectroscopy ; anharmonic coefficient
    Subject RIVBM - Solid Matter Physics ; Magnetism
    R&D ProjectsGD202/09/H041 GA ČR - Czech Science Foundation (CSF)
    IAA100100907 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
    GA202/09/0430 GA ČR - Czech Science Foundation (CSF)
    CEZAV0Z10100520 - FZU-D (2005-2011)
    UT WOS000297294600002
    DOI10.1103/PhysRevB.84.174121
    AnnotationTuning of the dielectric permittivity spectra of strontium titanate (SrTiO3) single crystals in an external electric field is investigated between 90 and 300 K by means of terahertz time-domain spectroscopy. Application of the electric bias leads to an appreciable tuning of the permittivity observed up to room temperature both in the parallel and perpendicular directions to the bias field. The observed behavior is interpreted in terms of soft-mode hardening due to the anharmonic character of its potential. No additional low-frequency relaxation mode was observed. A weak temperature dependence of the anharmonic coefficients was found in agreement with previously published low-temperature data.
    WorkplaceInstitute of Physics
    ContactKristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
    Year of Publishing2012
Number of the records: 1  

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