Transverse resistance of YBa2Cu3O7−δ single crystals

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

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Abstract

Measured is the transverse electrical resistance of YBa2Cu3O7−δ single crystals with different oxygen deficiency values (δ) in the temperature range Tc − 300 K. The experimental data are approximated by an empiric expression accounting for the fluctuation conductivity near Tc and the semiconductor-like resistance regime. Our analysis of the concentration dependences of the fitting parameters, in particular, reveals that the resistance temperature dependence is largely affected by the sample's non-homogeneity. The latter, in turn, causes a Tc anisotropy and variable-range hopping conductivity between different phases. The deduced maximal values of the basal-plane coherence length, ξxy(0), are comparable with those for low-temperature superconductors.
Original languageEnglish
Pages (from-to)617-621
JournalCurrent Applied Physics
Volume15
Issue number5
DOIs
Publication statusPublished - 2015

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Keywords

  • Superconducting cuprates
  • Transverse resistance
  • Anisotropy
  • Electrical resistance measurements

Cite this

Vovk, R. V., Khadzhai, G. Y., Dobrovolskiy, O. V., Nazyrov, Z. F., & Chroneos, A. (2015). Transverse resistance of YBa2Cu3O7−δ single crystals. Current Applied Physics, 15(5), 617-621. https://doi.org/10.1016/j.cap.2015.02.016