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Morphology and optical properties of thin Cd.sub.3./sub.As.sub.2./sub. films of a dirac semimetal compound

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    SYSNO ASEP0547321
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleMorphology and optical properties of thin Cd3As2 films of a dirac semimetal compound
    Author(s) Kovaleva, N. (RU)
    Fekete, Ladislav (FZU-D) RID, ORCID
    Chvostová, Dagmar (FZU-D) RID, SAI, ORCID
    Muratov, A. (RU)
    Number of authors4
    Article number1398
    Source TitleMetals. - : MDPI
    Roč. 10, č. 10 (2020)
    Number of pages9 s.
    Languageeng - English
    CountryCH - Switzerland
    Keywordsdirac semimetals ; cadmium arsenide ; thin films ; atomic force microscopy ; spectroscopic ellipsometry
    Subject RIVBM - Solid Matter Physics ; Magnetism
    OECD categoryCondensed matter physics (including formerly solid state physics, supercond.)
    Method of publishingOpen access
    Institutional supportFZU-D - RVO:68378271
    UT WOS000585150800001
    EID SCOPUS85094566655
    DOI10.3390/met10101398
    AnnotationUsing atomic-force microscopy (AFM) and wide-band (0.02–8.5 eV) spectroscopic ellipsometry techniques, we investigated the morphology and optical properties of Cd3As2 films grown by non-reactive RF magnetron sputtering on two types of oriented crystalline substrates (100)p-Si and (001) a-Al2O3. The AFM study revealed the grainy morphology of the films due to island incorporation during the film growth. The complex dielectric function spectra of the annealed Cd3As2/Al2O3 films manifest pronounced interband optical transitions at 1.2 and 3.0 eV, in excellent agreement with the theoretical calculations for the body centered tetragonal Cd3As2 crystal structure.agreement with the theoretical calculations for the body centered tetragonal Cd3As2 crystal structure. We discovered that due to electronic excitations to the Cd(s) conical bands, the low-energy absorption edge of the annealed Cd3As2 films reveals a linear dependence.
    WorkplaceInstitute of Physics
    ContactKristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
    Year of Publishing2022
    Electronic addresshttp://hdl.handle.net/11104/0323849
Number of the records: 1  

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