Transverse resistance in HoBa2Cu3O7−δ single crystals

R.V. Vovk, G.Y. Khadzhai, O.V. Dobrovolskiy, Z.F. Nazyrov, A. Chroneos

    Research output: Contribution to journalArticle

    Abstract

    The transverse electrical resistance of (Formula presented.) single crystals is investigated in the temperature range (Formula presented.) for optimally-doped (Formula presented.) and oxygen-poor (Formula presented.) samples. With decreasing temperature, the resistivity of the optimally-doped samples has been found to transit from the regime of scattering on phonons and defects to the regime of “semiconductor” character and, near (Formula presented.), of the fluctuation conductivity. The oxygen-poor samples have been revealed to exhibit only a variable range hopping conductivity of “semiconductor” character, which near (Formula presented.) transits into the fluctuation conductivity. A significant anisotropy of the residual resistivity and characteristics of the fluctuation conductivity is observed for samples of both types
    Original languageEnglish
    JournalModern Physics Letters B
    VolumeIn press
    DOIs
    Publication statusPublished - Nov 2015

    Bibliographical note

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    Keywords

    • Superconducting cuprates
    • holmium
    • electrical resistance measurements
    • anisotropy

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