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Evolution of c-axis resistivity in Y1−xPrxBa2Cu3O7−δ single crystals

  • HTSC—Transport, Thermodynamic Properties, Electron-phonon Coupling
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Czechoslovak Journal of Physics Aims and scope

Abstract

We report on the systematic study of the evolution of the in-plane (ρ ab ) and out-of-plane (ρ c ) resistivities of fully oxygenatedY 1−x Pr x Ba 2 Cu 3 O 7−δ single crystals. ρ c (x) exhibits a non-monotonic behavior: at low to moderatex, ρ c (x) and the anisotropy ρ c (x) increase, reaching a maximum at x≈0.42; for higherx,x, ρ c and ρ c /ρ c ab decrease, while ρ ab continues to increase monotonically. These results, along with the coexistence of metallic ρ ab (T) and semiconducting ρ c (T), are consistent with the presence of a gap in the energy spectrum of the chains, leading to tunneling through both valence and conduction bands of theCuO chains.

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References

  1. S. L. Cooper and K. E. Gray, Anisotropy and Interlayer Coupling in HighT c Cuprates, in Physical Properties of High Temperature Superconductors IV, Ed. D. M. Ginsberg (World Scientific, 1994).

  2. B. W. Veal, unpublished results.

  3. A. A. Abrikosov, Phys. Rev. B 52, 7026 (1995).

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Authors and Affiliations

  1. Department of Physics, Kent State University, 44242, Kent, OH, USA

    C. N. Jiang, A. R. Baldwin, G. A. Levin, T. Stein & C. C. Almasan

  2. Department of Physics and Institute for Pure and Applied Physical Sciences, University of California, San Diego, 92093, La Jolla, CA, USA

    D. A. Gajewski, S. H. Han & M. B. Maple

Authors
  1. C. N. Jiang
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  2. A. R. Baldwin
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  3. G. A. Levin
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  4. T. Stein
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  5. C. C. Almasan
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  6. D. A. Gajewski
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  7. S. H. Han
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  8. M. B. Maple
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Additional information

We thank A.A. Abrikosov and B.W. Veal for making their work on c-axis resistivity available to us prior to publication. The research at KSU was partially supported by the Research Council of KSU and at UCSD by DOE under Grant No. DE-FG03-86ER-45230.

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Jiang, C.N., Baldwin, A.R., Levin, G.A. et al. Evolution of c-axis resistivity in Y1−xPrxBa2Cu3O7−δ single crystals. Czech J Phys 46 (Suppl 2), 1163–1164 (1996). https://doi.org/10.1007/BF02583889

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  • DOI: https://doi.org/10.1007/BF02583889

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