Micro-Raman evidence for charge ordering in superconducting La2-xSrxCuO4

Lampakis, D; Palles, D; Liarokapis, E; Panagopoulos, C

dc.contributor.author	Lampakis, D	en
dc.contributor.author	Palles, D	en
dc.contributor.author	Liarokapis, E	en
dc.contributor.author	Panagopoulos, C	en
dc.date.accessioned	2014-03-01T01:26:40Z
dc.date.available	2014-03-01T01:26:40Z
dc.date.issued	2007	en
dc.identifier.issn	0921-4534	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18163
dc.subject	La2-xSrxCuO4	en
dc.subject	Local lattice distortions	en
dc.subject	Raman spectroscopy	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	Lanthanum alloys	en
dc.subject.other	Raman spectroscopy	en
dc.subject.other	Spin-lattice relaxation	en
dc.subject.other	Superconducting transition temperature	en
dc.subject.other	Thermal effects	en
dc.subject.other	Charge ordering	en
dc.subject.other	Local lattice distortions	en
dc.subject.other	Micro-Raman evidence	en
dc.subject.other	Superconducting materials	en
dc.title	Micro-Raman evidence for charge ordering in superconducting La2-xSrxCuO4	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.physc.2007.03.308	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.physc.2007.03.308	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	A systematic micro-Raman study has been carried out on high quality La2-xSrxCuO4 compounds with x = 0.0-0.45, in the temperature range of 10-300 K. It is shown that the behavior of the asymmetry of the Apex phonon could be due to doping induced local lattice distortions. The variation of the relative intensity of the La/Sr and the apex phonons, of A(g) symmetry, is found to be correlated with T-c even at low temperatures. Symmetry forbidden broad bands appear at similar to 150, 370, and 280 cm(-1) with intensities correlated with the doping dependence of the transition temperature. All these results can be attributed to the formation of stripes at temperatures well above the transition temperature. (c) 2007 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Physica C: Superconductivity and its Applications	en
dc.identifier.doi	10.1016/j.physc.2007.03.308	en
dc.identifier.isi	ISI:000249870600215	en
dc.identifier.volume	460-462 II	en
dc.identifier.issue	SPEC. ISS.	en
dc.identifier.spage	1174	en
dc.identifier.epage	1175	en