Excess conductivity in the Si doped (BiPb)SrCaCuO superconducting system

Academic Article

Abstract

  • The resistivity behavior above the critical temperature of the system (Bi Pb Si )Sr Ca Cu O (0 ≤ x ≤ 0.4) and (Bi Pb )Sr Ca (Cu Si ) O (0 ≤ y ≤ 0.1250) have been studied. With the use of Aslamazov- Larkin theory, the dimensionality of the samples was determinated. The value of the critical exponent (λ 1) obtained for samples with 0 ≤ x ≤ 0.20 and 0 ≤ y ≤ 0.0625 indicates the two dimensional nature of the superconductivity. However, an increase in the exponent λ in Si-doped sample with x ≥ 0.25 and y ≥ 0.0750 has been observed. This can be interpreted as a consequence of disorder which produces inhomogeneity in the CuO planes. © 1994. 1.6 0.4-x x 2 3 4 12+° 1.6 0.4 2 3 1-y y 4 12+° ∼ 2
  • Digital Object Identifier (doi)

    Author List

  • Navarrete L; Sánchez A; Mariño A
  • Start Page

  • 1943
  • End Page

  • 1944
  • Volume

  • 235-240
  • Issue

  • PART 3