Micro-Raman evidence for topological charge order across the superconducting dome of La2-x Srx CuO4

Lampakis, D; Liarokapis, E; Panagopoulos, C

dc.contributor.author	Lampakis, D	en
dc.contributor.author	Liarokapis, E	en
dc.contributor.author	Panagopoulos, C	en
dc.date.accessioned	2014-03-01T01:24:39Z
dc.date.available	2014-03-01T01:24:39Z
dc.date.issued	2006	en
dc.identifier.issn	1098-0121	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17369
dc.subject	Charge Order	en
dc.subject	Raman Spectra	en
dc.subject	Symmetry Breaking	en
dc.subject	Topological Charge	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	LA2CUO4	en
dc.subject.other	PHASE	en
dc.subject.other	DYNAMICS	en
dc.subject.other	SPECTRA	en
dc.title	Micro-Raman evidence for topological charge order across the superconducting dome of La2-x Srx CuO4	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevB.73.174518	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevB.73.174518	en
heal.identifier.secondary	174518	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	The doping dependence of the micro-Raman spectra of high-quality La2-xSrxCuO4 microcrystals with x=0.0-0.45 has been investigated in the region 10-300 K. The phonon at similar to 100 cm(-1) of the orthorhombic phase shows a classical soft-mode behavior up to x=0.17, supporting its correlation with the low-temperature orthorhombic to high-temperature tetragonal transition. In the xx-yy polarization spectra of the superconducting concentrations new modes at similar to 150 and 370 cm(-1) related to the symmetry breaking and a broad band at similar to 280 cm(-1) are attributed to the charge ordering at temperatures well above T-c. At all temperatures studied a correlation has been found between the doping dependence of the transition temperature and the intensity of the bands at similar to 150, similar to 280, and similar to 370 cm(-1), the intensity of the La/Sr mode, and the asymmetry of the apex phonon.	en
heal.publisher	AMERICAN PHYSICAL SOC	en
heal.journalName	Physical Review B - Condensed Matter and Materials Physics	en
dc.identifier.doi	10.1103/PhysRevB.73.174518	en
dc.identifier.isi	ISI:000237950200114	en
dc.identifier.volume	73	en
dc.identifier.issue	17	en