Isotope effect in the high-Tc superconductors Ba2YCu3O7 and Ba2EuCu3O7

Batlogg, B; Cava, RJ; Jayaraman, A; Van Dover, RB; Kourouklis, GA; Sunshine, S; Murphy, DW; Rupp, LW; Chen, HS; White, A; Short, KT; Mujsce, AM; Rietman, EA

dc.contributor.author	Batlogg, B	en
dc.contributor.author	Cava, RJ	en
dc.contributor.author	Jayaraman, A	en
dc.contributor.author	Van Dover, RB	en
dc.contributor.author	Kourouklis, GA	en
dc.contributor.author	Sunshine, S	en
dc.contributor.author	Murphy, DW	en
dc.contributor.author	Rupp, LW	en
dc.contributor.author	Chen, HS	en
dc.contributor.author	White, A	en
dc.contributor.author	Short, KT	en
dc.contributor.author	Mujsce, AM	en
dc.contributor.author	Rietman, EA	en
dc.date.accessioned	2014-03-01T01:39:13Z
dc.date.available	2014-03-01T01:39:13Z
dc.date.issued	1987	en
dc.identifier.issn	00319007	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/22620
dc.title	Isotope effect in the high-Tc superconductors Ba2YCu3O7 and Ba2EuCu3O7	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevLett.58.2333	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevLett.58.2333	en
heal.publicationDate	1987	en
heal.abstract	We have studied the effect of isotopic substitution on the superconducting Tc in the 90-K superconductors Ba2YCu3O7 and Ba2EuCu3O7 by replacing O16 with the heavier isotope O18. Samples with approximately 75% of the O16 replaced by O18 were prepared by gas-phase ion exchange. In these samples the phonon frequencies, measured by Raman spectroscopy, are reduced by the expected 4%. The transition temperatures, however, are found to change by less than 0.2%. This change in Tc is much less than that expected for strongly coupled phonon-mediated superconductivity. © 1987 The American Physical Society.	en
heal.journalName	Physical Review Letters	en
dc.identifier.doi	10.1103/PhysRevLett.58.2333	en
dc.identifier.volume	58	en
dc.identifier.issue	22	en
dc.identifier.spage	2333	en
dc.identifier.epage	2336	en