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Normal state conduction in Gd(Ba2-xPrx)Cu 3O7+δ

Mohammadizadeh, M. R ; Sharif University of Technology | 2003

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  1. Type of Document: Article
  2. DOI: 10.1140/epjb/e2003-00179-2
  3. Publisher: 2003
  4. Abstract:
  5. The normal state resistivity of single phase polycrystalline Gd(Ba 2-x Pr x )Cu3O7+δ samples with 0.0 ≤ x ≤ 0.50 have been investigated. There is a distinct metal-insulator transition at xMITc = 0.2 and a superconductor-insulator transition at xSITc = 0.35 with the increase of x. The two-dimensional variable range hopping is dominant in the normal state resistivity of the samples. The localization length, hopping range, and hopping energy of carriers show that Pr doping strongly localizes the carriers in normal state, and finally causes the suppression of superconductivity. © EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2003
  6. Keywords:
  7. Electric conductivity ; Superconductivity ; Semiconductor doping ; Sampling ; Polycrystalline materials ; Metal insulator transition
  8. Source: European Physical Journal B ; Volume 33, Issue 4 , 2003 , Pages 381-390 ; 14346028 (ISSN)
  9. URL: https://link.springer.com/article/10.1140/epjb/e2003-00179-2