The oxygen isotope effect on critical temperature in superconducting copper oxides

Details The oxygen isotope effect on critical temperature in superconducting copper oxides The oxygen isotope effect on critical temperature in superconducting copper oxides

2003-12-09

arxiv.org/abs/cond-mat/0312229v2

Superconductor Science & Technology 17 (2004) 721 - 723

Physics

Condensed Matter

Superconductivity

3 pages including 4 figures; version 2 is with minor corrections

Scientific paper

10.1088/0953-2048/17/4/029

The isotope effect provided a crucial key to the development of the BCS (Bardeen-Cooper-Schrieffer) microscopic theory of superconductivity for conventional superconductors. In superconducting cooper oxides (cuprates) showing an unconventional type of superconductivity, the oxygen isotope effect is very peculiar: the exponential coefficient strongly depends on doping level. No consensus has been reached so far on the origin of the isotope effect in the cuprates. Here we show that the oxygen isotope effect in cuprates is in agreement with the bisoliton theory of superconductivity.

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