Fluctuation conductivity of oxygen underdoped YBa2Cu 3O7-δ single crystals

R. V. Vovk, G. Ya Khadzhai, I. L. Goulatis, A. Chroneos

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

The electrical resistance in the range of TC-300 K in the layer planes of YBa2Cu3O7-δ single crystals with a range of oxygen deficiency (providing a range of TC from 78 to 92 K) was investigated. The experimental data is approximated by an expression that accounts for the scattering of electrons on phonons, as well as on defects and the fluctuation conductivity in a 3-D model of the Aslamazov-Larkin theory. According to this approximation, depending upon the oxygen deficiency, the Debye temperature varies from 245 to 400 K, coherence length ξC(0) ≈0.5 Å.

Original languageEnglish
Pages (from-to)88-90
Number of pages3
JournalPhysica B: Condensed Matter
Volume436
Early online date3 Dec 2013
DOIs
Publication statusPublished - 1 Mar 2014
Externally publishedYes

Keywords

  • Fluctuation conductivity
  • High temperature superconductor
  • Oxygen stoichiometry

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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