Oxygen Isotope Exponent as a Function of the Numbers of CuO2 Layers in Optimally Doped Superconductors Bi2Sr2Ca Cun-1 (n) O2n+4+delta (n=1, 2, 3)

Askerzade İ., Askerbeyli R. T. T.

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, vol.31, no.4, pp.1043-1046, 2018 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 31 Issue: 4
  • Publication Date: 2018
  • Doi Number: 10.1007/s10948-017-4303-2
  • Journal Name: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1043-1046
  • Keywords: Cuprate superconductors, Isotope effect, Electron-phonon coupling, Coulomb repulsion, CRITICAL-TEMPERATURE, TRANSITION-TEMPERATURE, COULOMB REPULSION
  • Ankara University Affiliated: Yes

Abstract

In this study, we carried out an analysis of the oxygen isotope exponent in optimally doped Bi2Sr2Ca (n-1) Cu (n) O2n+4 + delta ( n = 1,2,3). The expression in the strong electron-phonon coupling approach for the isotope exponent taking into account numbers of CuO2 layers in the unit cell was obtained. It is shown that increasing numbers of CuO2 layers lead to the decreasing of the isotope exponent, which is in agreement with available experimental data.