An isotope effect has been searched for in the high-Tc, superconductor YBa2Cu307 —b through substitution of 180 for 16O. No shift in the superconducting transition temperature T, is observed by electrical resistivity or magnetic susceptibility measurements. We discuss the implications of this result for mechanisms of superconductivity in the high-T, oxides.
Physical Review Letters, Volume 58, Issue 22, 1987, pages 2337-2339.
© 1987 The American Physical Society
PACS: 74.30.-e, 74.70.Ya