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The European Physical Journal B

, Volume 79, Issue 4, pp 443–447 | Cite as

Fluctuation-induced conductivity and dimensionality in the new Y-based Y3Ba5Cu8O18- x superconductor

  • A. EsmaeiliEmail author
  • H. Sedghi
  • M. Amniat-Talab
  • M. Talebian
Article

Abstract.

The fluctuation conductivity measurement on the new Y-based Y3Ba5Cu8O18- x superconductor is presented. The dimensional crossovers between different temperature regimes were analyzed with Aslamazov-Larkin (AL) theory and a good quantitative agreement was achieved for the experimental data. For our data, the mean field regime is dominated by 2D AL fluctuations. Our results reveal the occurrence of critical fluctuation regime in consistent with the prediction of the full dynamic 3D XY model. We found the dynamical critical exponent to be z = 3.4 for our data. We analyzed also the excess conductivity data by Hikami-Larkin theory and estimated the phase relaxation time.

Keywords

Coherence Length Dynamical Exponent Excess Conductivity Dynamical Critical Exponent Phase Relaxation Time 
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

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • A. Esmaeili
    • 1
    Email author
  • H. Sedghi
    • 1
  • M. Amniat-Talab
    • 1
  • M. Talebian
    • 1
  1. 1.Department of PhysicsUniversity of UrmiaUrmiaIran

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