A displacive structural transformation in the CuO2 planes of YBa2Cu3Ox at the underdoped-overdoped phase separation line

Kaldis, E; Rohler, J; Liarokapis, E; Poulakis, N; Conder, K; Loeffen, PW

dc.contributor.author	Kaldis, E	en
dc.contributor.author	Rohler, J	en
dc.contributor.author	Liarokapis, E	en
dc.contributor.author	Poulakis, N	en
dc.contributor.author	Conder, K	en
dc.contributor.author	Loeffen, PW	en
dc.date.accessioned	2014-03-01T01:12:33Z
dc.date.available	2014-03-01T01:12:33Z
dc.date.issued	1997	en
dc.identifier.issn	0031-9007	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12123
dc.subject	Phase Separation	en
dc.subject	Phase Transformation	en
dc.subject	Raman Scattering	en
dc.subject	Structural Transformation	en
dc.subject.classification	Physics, Multidisciplinary	en
dc.subject.other	OXYGEN	en
dc.subject.other	SUPERCONDUCTIVITY	en
dc.subject.other	ANOMALIES	en
dc.title	A displacive structural transformation in the CuO2 planes of YBa2Cu3Ox at the underdoped-overdoped phase separation line	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevLett.79.4894	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevLett.79.4894	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	A structural phase transformation in the CuO2 planes of YBa2Cu3Ox has been observed at the onset of the overdoped regime, x = 6.95. We have measured as a function of x the dimpling in the CuO2 planes by EXAFS, and the O(2, 3) in-phase (A(1g)) mode by Raman scattering. The data show for x greater than or equal to 6.95 anomalously large static displacements of the Cu(2) atoms off the O(2, 3) layer and a gap in the distribution of the O(2, 3) in-phase Raman shifts. We conclude the structure of overdoped YBa2Cu3Ox, to be a martensitic form of the optimum doped crystal.	en
heal.publisher	AMERICAN PHYSICAL SOC	en
heal.journalName	Physical Review Letters	en
dc.identifier.doi	10.1103/PhysRevLett.79.4894	en
dc.identifier.isi	ISI:A1997YL24400044	en
dc.identifier.volume	79	en
dc.identifier.issue	24	en
dc.identifier.spage	4894	en
dc.identifier.epage	4897	en