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Electrical conductivity in oxygen-substituted SrTiO3-δ films

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00547877" target="_blank" >RIV/68378271:_____/21:00547877 - isvavai.cz</a>

  • Result on the web

    <a href="https://doi.org/10.1063/5.0072225" target="_blank" >https://doi.org/10.1063/5.0072225</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1063/5.0072225" target="_blank" >10.1063/5.0072225</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Electrical conductivity in oxygen-substituted SrTiO3-δ films

  • Original language description

    Enhancement of electrical conductivity in fundamentally insulating ABO3 perovskite oxide ferroelectrics is crucial for innovative applications in resistive switching, photovoltaics, and catalysis. One of the methods to raise conductivity in bulk crystals or ceramics relies on the possibility to remove and/or substitute oxygen atoms. Here, we explored this approach for thin films of the representative perovskite oxide SrTiO3. Small-signal AC conductivity was investigated in epitaxial and polycrystalline films, where oxygen vacancies (VO), nitrogen (N), or hydrogen (H) were introduced in situ during filmgrowth. Hoppingmechanismof conductivity was evidenced by the observed strong growth of AC conductivity with temperature, frequency, and AC voltage in all films. Small polarons were identified as charge carriers. Oxygen vacancies/substitutions were suggested to facilitate hopping probability by generating sites for carrier localization.

  • 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

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2021

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Applied Physics Letters

  • ISSN

    0003-6951

  • e-ISSN

    1077-3118

  • Volume of the periodical

    119

  • Issue of the periodical within the volume

    Nov.

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    5

  • Pages from-to

    192901

  • UT code for WoS article

    000721489800006

  • EID of the result in the Scopus database

    2-s2.0-85119037892