Journal of Superconductivity

, Volume 7, Issue 2, pp 319–322 | Cite as

Transport properties of oxygen-deficient YBa2Cu3O7−x thin films

  • R. Hopfengärtner
  • M. Lippert
  • W. Dorsch
  • H. Dietrich
  • G. Kreiselmeyer
  • G. Saemann-Ischenko
XI. Transport Properties


We report on measurements of the in-plane resistivityρ and Hall coefficientR H (B∥c) of various oxygen-deficient epitaxial films of YBa2Cu3O7−x in the normal state. The superconducting transition temperaturesT c of the samples vary from 14 to 90 K. Both the resistivity and the Hall coefficient exhibit a strong dependence on the oxygen content and the temperature. Asx increases,T c decreases continuously, whileρ andR H gradually increase in magnitude. Furthermore, also the characteristic linear dependences ofραT andRHαT −1 of the highly doped compounds changes to a nonlinear behavior for the samples withT c lower than 60 K. The unusual doping and temperature dependence ofR H will be compared to the predictions of our calculations, based on a two-dimensional tight-binding model using the relaxation-time approximation. The model considers also the next-nearest-neighbor hopping, which strongly influences the predicted Hall coefficient. Additionally, the cotangent of the Hall angle cot(Θ H ) is discussed in the framework of the two-dimensional Luttinger liquid theory.

Key words

Thin films normal state properties electronic structures 


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Copyright information

© Plenum Publishing Corporation 1994

Authors and Affiliations

  • R. Hopfengärtner
    • 1
  • M. Lippert
    • 1
  • W. Dorsch
    • 1
  • H. Dietrich
    • 1
  • G. Kreiselmeyer
    • 1
  • G. Saemann-Ischenko
    • 1
  1. 1.Physikalisches Institut Universität Erlangen-NürnbergErlangen

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