Isotope Effect in Superconducting YBa₂Cu₃O_7-δ System

1 December 1987

journal article
Published by IOP Publishing in Japanese Journal of Applied Physics

Vol. 26 (12A), L2085
https://doi.org/10.1143/jjap.26.l2085

Abstract

An oxygen isotope effect is observed by a measurement of the resistivity when ¹⁶O is substituted for ¹⁸O in the YBa₂Cu₃O_7-δ compound. The superconducting transition temperature T _c is lowered by 0.4 K upon substitution. The results suggest that the phonon related to oxygen in the two-dimensional CuO₂ plane contributes to the mechanism of high-T _c superconductivity. When ⁶³Cu is substituted for ⁶⁵Cu, no appreciable isotope effect is observed.

Keywords

This publication has 14 references indexed in Scilit:

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Abstract

Keywords

Isotope Effect in Superconducting YBa₂Cu₃O_7-δ System