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Journal of Low Temperature Physics

, Volume 117, Issue 5–6, pp 1223–1227 | Cite as

Normal State Resistivity of YBa2Cu3O7-δ /PrBa2Cu2.8Ga0.2O7-δc-axis Superlattices : Evidence for an Underdoping Effect of YBa2Cu3O7-δ

  • B. Leridon
  • A. Défossez
  • J. Dumont
  • J. P. Contour
Article

Abstract

We measured the ab-plane resistivity of c-axis YBa 2 Cu 3 O 7-δ /PrBa 2 Cu 2.8 Ga 0.2 O 7 superlattices grown by pulsed laser deposition, from T C to 325 K. The normal-state resistivity and the fluctuation regime above T C were studied for different thickness of YBa 2 Cu 3 O 7-δ and PrBa 2 Cu 2.8 Ga 0.2 O 7-δ in the superlattice period. As the concentration of PrBa 2 Cu 2.8 Ga 0.2 O 7-δ is raised, the T C decreases and the resistivity increases. Evidence is given for an underdoping effect in the YBa 2 Cu 3 O 7-δ layers and our measurements are compared to similar measurements on oxygen-deficient YBa 2 Cu 3 O 7-δ thin films, grown on the same equipment. They are also compared to measurements on YBa 2 Cu 3-x Co x O 7-δ single crystals made by other groups. We present here the different measurements and investigate the mechanisms that could be held responsible for this depletion in charge carriers.

Keywords

Pulse Laser Charge Carrier Magnetic Material Similar Measurement Pulse Laser Deposition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Publishing Corporation 1999

Authors and Affiliations

  • B. Leridon
    • 1
  • A. Défossez
    • 1
    • 2
  • J. Dumont
    • 1
    • 2
  • J. P. Contour
    • 1
  1. 1.Unité Mixte de PhysiqueThomson-CSF/CNRS, Domaine de CorbevilleOrsay cedexFrance
  2. 2.Laboratoire de Physique du SolideESPCIParisFrance

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